What is 2/33 plus 9/39? (Answer: 125/429)

Exact Answer

==================================================
Problem: What is 2/33 plus 9/39?
Formula / Expression: 2/33 + 9/39
Final Answer: 125/429
==================================================

Step-by-Step Solution:

Step 1: Find the Least Common Denominator (LCD)
The denominators 33 and 39 share a common factor (GCD = 3). Finding their Least Common Multiple gives an LCD of 429 (which is smaller than their product 33 × 39 = 1287, keeping the calculation simpler).
Working: LCD(33, 39) = 429

Step 2: Convert to Equivalent Fractions with Common Denominator 429
Multiply the numerator and denominator of 2/33 by 13, and multiply the numerator and denominator of 9/39 by 11 so both fractions share the common base 429.
Working: 2 × 13/33 × 13 = 26/429 and 9 × 11/39 × 11 = 99/429

Step 3: Add the Numerators
Now add the numerators (26 + 99 = 125) and keep the common denominator 429 unchanged.
Working: 26 + 99/429 = 125/429

Step 4: Check if the Fraction Can Be Simplified
The Greatest Common Divisor (GCD) of 125 and 429 is 1, confirming that 125/429 cannot be reduced further—it is already in its simplest irreducible form.
Working: 125/429

Step 5: Decimal & Percentage Representation
Dividing the numerator 125 by denominator 429 produces a repeating decimal (approximately 0.291375, or 29.1375%).
Working: 125 ÷ 429 = 0.291375 (29.1375%)

Key Values:
- Simplified Fraction: 125/429
- Mixed Number Form: 125/429
- Decimal Value: 0.291375
- Percentage: 29.1375%

--------------------------------------------------
Solved with FractionsCalc:
https://fractionscalc.com/what-is-2-33-plus-9-39/
==================================================

2/33 + 9/39 = 125/429

Simplified Fraction

125/429

Mixed Number

Proper (125/429)

Decimal Value

0.291375

Percentage

29.1375%

Reduce / Convert Fraction:

Convert Fraction:

Enter Decimal Number:

Enter Percentage: %

What is % of

From Value: To Value:

Simplify Ratio: :

Switch to Proportion / Missing X Solver (A/B = C/D) →

Enter 3 known numbers and leave 1 empty (or type x) to solve:

← Switch to Ratio Simplifier (A:B)

Provide any 2 values below to calculate the remaining:

Price before discount

Discount

Price after discount

You saved

+ Add Sales Tax & Extra Coupon (Optional)

Sales Tax: % Extra Off: %

Provide any 2 values below to calculate the remaining:

Cost

Markup

REVENUE

Gross Profit

Profit Margin

Bill Subtotal

Tip Percentage

Split (People)

👥

Quick Tip:

Total Bill

Split Between

👥

Tip % (Optional)

Include Tip:

Total Price

Quantity

Unit of Measure

← Discount & Sales Tax • Ratio Simplifier (A:B) →

First Number: Second Number:

Find All Factors of:

Dividend: ÷ Divisor:

Number to Round: To Nearest:

Method: Standard (5+ ↑) Always Up (Ceil) Always Down (Floor)

Presets:

√ Square Root of: OR Power (x^y): ^{^}

x² + x + = 0

Number (n! & log):

Circle Radius (r):

Side a: Side b:

Angle (Degrees): °

Numbers (comma separated):

Total Items (n): Choose (r):

Decimal Number:

Number (1–3999):

Step-by-Step Solution: 2/33 + 9/39

Step 1

Find the Least Common Denominator (LCD)

The denominators 33 and 39 share a common factor (GCD = 3). Finding their Least Common Multiple gives an LCD of 429 (which is smaller than their product 33 × 39 = 1287, keeping the calculation simpler).

LCD(33, 39) = 429

Step 2

Convert to Equivalent Fractions with Common Denominator 429

Multiply the numerator and denominator of 2/33 by 13, and multiply the numerator and denominator of 9/39 by 11 so both fractions share the common base 429.

2 × 13/33 × 13 = 26/429 and 9 × 11/39 × 11 = 99/429

Step 3

Add the Numerators

Now add the numerators (26 + 99 = 125) and keep the common denominator 429 unchanged.

26 + 99/429 = 125/429

Step 4

Check if the Fraction Can Be Simplified

The Greatest Common Divisor (GCD) of 125 and 429 is 1, confirming that 125/429 cannot be reduced further—it is already in its simplest irreducible form.

125/429

Step 5

Decimal & Percentage Representation

Dividing the numerator 125 by denominator 429 produces a repeating decimal (approximately 0.291375, or 29.1375%).

125 ÷ 429 = 0.291375 (29.1375%)

Visual Representation

The diagram below illustrates 2/33 plus 9/39 visually:

Summary & Alternative Representations

Property / Format	Value
Lowest Terms Fraction	`125/429`
Mixed Number Form	`125/429`
Decimal Form	`0.291375`
Percentage	`29.1375%`

Was this solution helpful?

Help us improve our free step-by-step tools

Frequently Asked Questions

What is 2/33 plus 9/39 as a fraction?

2/33 + 9/39 in simplest fraction form is 125/429.

What is 2/33 plus 9/39 as a decimal?

2/33 + 9/39 converted to a decimal is 0.291375.

What is 2/33 plus 9/39 as a percentage?

2/33 + 9/39 expressed as a percentage is 29.1375%.

Does 2/33 plus 9/39 result in a terminating or repeating decimal?

It results in a repeating decimal (approximately 0.291375...) because the denominator contains prime factors other than 2 and 5.