What is 2/5 plus 3/6? (Answer: 9/10)

Exact Answer

==================================================
Problem: What is 2/5 plus 3/6?
Formula / Expression: 2/5 + 3/6
Final Answer: 9/10
==================================================

Step-by-Step Solution:

Step 1: Find the Least Common Denominator (LCD)
The denominators 5 and 6 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 5 × 6 = 30.
Working: LCD(5, 6) = 30

Step 2: Convert to Equivalent Fractions with Common Denominator 30
Multiply the numerator and denominator of 2/5 by 6, and multiply the numerator and denominator of 3/6 by 5 so both fractions share the common base 30.
Working: 2 × 6/5 × 6 = 12/30 and 3 × 5/6 × 5 = 15/30

Step 3: Add the Numerators
Now add the numerators (12 + 15 = 27) and keep the common denominator 30 unchanged.
Working: 12 + 15/30 = 27/30

Step 4: Simplify the Fraction to Lowest Terms
Find the Greatest Common Divisor (GCD) of 27 and 30, which is 3. Divide both the numerator and denominator by 3.
Working: 27 ÷ 3/30 ÷ 3 = 9/10

Step 5: Decimal & Percentage Representation
Dividing the numerator 9 by denominator 10 yields an exact terminating decimal of 0.9 (or 90%).
Working: 9 ÷ 10 = 0.9 (90%)

Key Values:
- Simplified Fraction: 9/10
- Mixed Number Form: 9/10
- Decimal Value: 0.9
- Percentage: 90%

--------------------------------------------------
Solved with FractionsCalc:
https://fractionscalc.com/what-is-2-5-plus-3-6/
==================================================

2/5 + 3/6 = 9/10

Simplified Fraction

9/10

Mixed Number

Proper (9/10)

Decimal Value

0.9

Percentage

90%

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: 2/5 + 3/6

Step 1

Find the Least Common Denominator (LCD)

The denominators 5 and 6 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 5 × 6 = 30.

LCD(5, 6) = 30

Step 2

Convert to Equivalent Fractions with Common Denominator 30

Multiply the numerator and denominator of 2/5 by 6, and multiply the numerator and denominator of 3/6 by 5 so both fractions share the common base 30.

2 × 6/5 × 6 = 12/30 and 3 × 5/6 × 5 = 15/30

Step 3

Add the Numerators

Now add the numerators (12 + 15 = 27) and keep the common denominator 30 unchanged.

12 + 15/30 = 27/30

Step 4

Simplify the Fraction to Lowest Terms

Find the Greatest Common Divisor (GCD) of 27 and 30, which is 3. Divide both the numerator and denominator by 3.

27 ÷ 3/30 ÷ 3 = 9/10

Step 5

Decimal & Percentage Representation

Dividing the numerator 9 by denominator 10 yields an exact terminating decimal of 0.9 (or 90%).

9 ÷ 10 = 0.9 (90%)

Visual Representation

The diagram below illustrates 2/5 plus 3/6 visually:

Summary & Alternative Representations

Property / Format	Value
Lowest Terms Fraction	`9/10`
Mixed Number Form	`9/10`
Decimal Form	`0.9`
Percentage	`90%`

Was this solution helpful?

Help us improve our free step-by-step tools

Frequently Asked Questions

What is 2/5 plus 3/6 as a fraction?

2/5 + 3/6 in simplest fraction form is 9/10.

What is 2/5 plus 3/6 as a decimal?

2/5 + 3/6 converted to a decimal is 0.9.

What is 2/5 plus 3/6 as a percentage?

2/5 + 3/6 expressed as a percentage is 90%.

Does 2/5 plus 3/6 result in a terminating or repeating decimal?

It results in an exact terminating decimal (0.9) because the denominator in simplest terms contains only prime factors 2 and/or 5.