What is 7/22 plus 2/5? (Answer: 79/110)

Exact Answer

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Problem: What is 7/22 plus 2/5?
Formula / Expression: 7/22 + 2/5
Final Answer: 79/110
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Step-by-Step Solution:

Step 1: Find the Least Common Denominator (LCD)
The denominators 22 and 5 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 22 × 5 = 110.
Working: LCD(22, 5) = 110

Step 2: Convert to Equivalent Fractions with Common Denominator 110
Multiply the numerator and denominator of 7/22 by 5, and multiply the numerator and denominator of 2/5 by 22 so both fractions share the common base 110.
Working: 7 × 5/22 × 5 = 35/110 and 2 × 22/5 × 22 = 44/110

Step 3: Add the Numerators
Now add the numerators (35 + 44 = 79) and keep the common denominator 110 unchanged.
Working: 35 + 44/110 = 79/110

Step 4: Check if the Fraction Can Be Simplified
The Greatest Common Divisor (GCD) of 79 and 110 is 1, confirming that 79/110 cannot be reduced further—it is already in its simplest irreducible form.
Working: 79/110

Step 5: Decimal & Percentage Representation
Dividing the numerator 79 by denominator 110 produces a repeating decimal (approximately 0.718182, or 71.8182%).
Working: 79 ÷ 110 = 0.718182 (71.8182%)

Key Values:
- Simplified Fraction: 79/110
- Mixed Number Form: 79/110
- Decimal Value: 0.718182
- Percentage: 71.8182%

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Solved with FractionsCalc:
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7/22 + 2/5 = 79/110

Simplified Fraction

79/110

Mixed Number

Proper (79/110)

Decimal Value

0.718182

Percentage

71.8182%

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Step-by-Step Solution: 7/22 + 2/5

Step 1

Find the Least Common Denominator (LCD)

The denominators 22 and 5 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 22 × 5 = 110.

LCD(22, 5) = 110

Step 2

Convert to Equivalent Fractions with Common Denominator 110

Multiply the numerator and denominator of 7/22 by 5, and multiply the numerator and denominator of 2/5 by 22 so both fractions share the common base 110.

7 × 5/22 × 5 = 35/110 and 2 × 22/5 × 22 = 44/110

Step 3

Add the Numerators

Now add the numerators (35 + 44 = 79) and keep the common denominator 110 unchanged.

35 + 44/110 = 79/110

Step 4

Check if the Fraction Can Be Simplified

The Greatest Common Divisor (GCD) of 79 and 110 is 1, confirming that 79/110 cannot be reduced further—it is already in its simplest irreducible form.

79/110

Step 5

Decimal & Percentage Representation

Dividing the numerator 79 by denominator 110 produces a repeating decimal (approximately 0.718182, or 71.8182%).

79 ÷ 110 = 0.718182 (71.8182%)

Visual Representation

The diagram below illustrates 7/22 plus 2/5 visually:

Summary & Alternative Representations

Property / Format	Value
Lowest Terms Fraction	`79/110`
Mixed Number Form	`79/110`
Decimal Form	`0.718182`
Percentage	`71.8182%`

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Frequently Asked Questions

What is 7/22 plus 2/5 as a fraction?

7/22 + 2/5 in simplest fraction form is 79/110.

What is 7/22 plus 2/5 as a decimal?

7/22 + 2/5 converted to a decimal is 0.718182.

What is 7/22 plus 2/5 as a percentage?

7/22 + 2/5 expressed as a percentage is 71.8182%.

Does 7/22 plus 2/5 result in a terminating or repeating decimal?

It results in a repeating decimal (approximately 0.718182...) because the denominator contains prime factors other than 2 and 5.