What is 7/22 plus 3/9? (Answer: 43/66)

Exact Answer

==================================================
Problem: What is 7/22 plus 3/9?
Formula / Expression: 7/22 + 3/9
Final Answer: 43/66
==================================================

Step-by-Step Solution:

Step 1: Find the Least Common Denominator (LCD)
The denominators 22 and 9 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 22 × 9 = 198.
Working: LCD(22, 9) = 198

Step 2: Convert to Equivalent Fractions with Common Denominator 198
Multiply the numerator and denominator of 7/22 by 9, and multiply the numerator and denominator of 3/9 by 22 so both fractions share the common base 198.
Working: 7 × 9/22 × 9 = 63/198 and 3 × 22/9 × 22 = 66/198

Step 3: Add the Numerators
Now add the numerators (63 + 66 = 129) and keep the common denominator 198 unchanged.
Working: 63 + 66/198 = 129/198

Step 4: Simplify the Fraction to Lowest Terms
Find the Greatest Common Divisor (GCD) of 129 and 198, which is 3. Divide both the numerator and denominator by 3.
Working: 129 ÷ 3/198 ÷ 3 = 43/66

Step 5: Decimal & Percentage Representation
Dividing the numerator 43 by denominator 66 produces a repeating decimal (approximately 0.651515, or 65.1515%).
Working: 43 ÷ 66 = 0.651515 (65.1515%)

Key Values:
- Simplified Fraction: 43/66
- Mixed Number Form: 43/66
- Decimal Value: 0.651515
- Percentage: 65.1515%

--------------------------------------------------
Solved with FractionsCalc:
https://fractionscalc.com/what-is-7-22-plus-3-9/
==================================================

7/22 + 3/9 = 43/66

Simplified Fraction

43/66

Mixed Number

Proper (43/66)

Decimal Value

0.651515

Percentage

65.1515%

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: 7/22 + 3/9

Step 1

Find the Least Common Denominator (LCD)

The denominators 22 and 9 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 22 × 9 = 198.

LCD(22, 9) = 198

Step 2

Convert to Equivalent Fractions with Common Denominator 198

Multiply the numerator and denominator of 7/22 by 9, and multiply the numerator and denominator of 3/9 by 22 so both fractions share the common base 198.

7 × 9/22 × 9 = 63/198 and 3 × 22/9 × 22 = 66/198

Step 3

Add the Numerators

Now add the numerators (63 + 66 = 129) and keep the common denominator 198 unchanged.

63 + 66/198 = 129/198

Step 4

Simplify the Fraction to Lowest Terms

Find the Greatest Common Divisor (GCD) of 129 and 198, which is 3. Divide both the numerator and denominator by 3.

129 ÷ 3/198 ÷ 3 = 43/66

Step 5

Decimal & Percentage Representation

Dividing the numerator 43 by denominator 66 produces a repeating decimal (approximately 0.651515, or 65.1515%).

43 ÷ 66 = 0.651515 (65.1515%)

Visual Representation

The diagram below illustrates 7/22 plus 3/9 visually:

Summary & Alternative Representations

Property / Format	Value
Lowest Terms Fraction	`43/66`
Mixed Number Form	`43/66`
Decimal Form	`0.651515`
Percentage	`65.1515%`

Was this solution helpful?

Help us improve our free step-by-step tools

Frequently Asked Questions

What is 7/22 plus 3/9 as a fraction?

7/22 + 3/9 in simplest fraction form is 43/66.

What is 7/22 plus 3/9 as a decimal?

7/22 + 3/9 converted to a decimal is 0.651515.

What is 7/22 plus 3/9 as a percentage?

7/22 + 3/9 expressed as a percentage is 65.1515%.

Does 7/22 plus 3/9 result in a terminating or repeating decimal?

It results in a repeating decimal (approximately 0.651515...) because the denominator contains prime factors other than 2 and 5.