What is 2/5 plus 9/22? (Answer: 89/110)

Exact Answer

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Problem: What is 2/5 plus 9/22?
Formula / Expression: 2/5 + 9/22
Final Answer: 89/110
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Step-by-Step Solution:

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

Step 2: Convert to Equivalent Fractions with Common Denominator 110
Multiply the numerator and denominator of 2/5 by 22, and multiply the numerator and denominator of 9/22 by 5 so both fractions share the common base 110.
Working: 2 × 22/5 × 22 = 44/110 and 9 × 5/22 × 5 = 45/110

Step 3: Add the Numerators
Now add the numerators (44 + 45 = 89) and keep the common denominator 110 unchanged.
Working: 44 + 45/110 = 89/110

Step 4: Check if the Fraction Can Be Simplified
The Greatest Common Divisor (GCD) of 89 and 110 is 1, confirming that 89/110 cannot be reduced further—it is already in its simplest irreducible form.
Working: 89/110

Step 5: Decimal & Percentage Representation
Dividing the numerator 89 by denominator 110 produces a repeating decimal (approximately 0.809091, or 80.9091%).
Working: 89 ÷ 110 = 0.809091 (80.9091%)

Key Values:
- Simplified Fraction: 89/110
- Mixed Number Form: 89/110
- Decimal Value: 0.809091
- Percentage: 80.9091%

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Solved with FractionsCalc:
https://fractionscalc.com/what-is-2-5-plus-9-22/
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2/5 + 9/22 = 89/110

Simplified Fraction

89/110

Mixed Number

Proper (89/110)

Decimal Value

0.809091

Percentage

80.9091%

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Step-by-Step Solution: 2/5 + 9/22

Step 1

Find the Least Common Denominator (LCD)

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

LCD(5, 22) = 110

Step 2

Convert to Equivalent Fractions with Common Denominator 110

Multiply the numerator and denominator of 2/5 by 22, and multiply the numerator and denominator of 9/22 by 5 so both fractions share the common base 110.

2 × 22/5 × 22 = 44/110 and 9 × 5/22 × 5 = 45/110

Step 3

Add the Numerators

Now add the numerators (44 + 45 = 89) and keep the common denominator 110 unchanged.

44 + 45/110 = 89/110

Step 4

Check if the Fraction Can Be Simplified

The Greatest Common Divisor (GCD) of 89 and 110 is 1, confirming that 89/110 cannot be reduced further—it is already in its simplest irreducible form.

89/110

Step 5

Decimal & Percentage Representation

Dividing the numerator 89 by denominator 110 produces a repeating decimal (approximately 0.809091, or 80.9091%).

89 ÷ 110 = 0.809091 (80.9091%)

Visual Representation

The diagram below illustrates 2/5 plus 9/22 visually:

Summary & Alternative Representations

Property / Format	Value
Lowest Terms Fraction	`89/110`
Mixed Number Form	`89/110`
Decimal Form	`0.809091`
Percentage	`80.9091%`

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Frequently Asked Questions

What is 2/5 plus 9/22 as a fraction?

2/5 + 9/22 in simplest fraction form is 89/110.

What is 2/5 plus 9/22 as a decimal?

2/5 + 9/22 converted to a decimal is 0.809091.

What is 2/5 plus 9/22 as a percentage?

2/5 + 9/22 expressed as a percentage is 80.9091%.

Does 2/5 plus 9/22 result in a terminating or repeating decimal?

It results in a repeating decimal (approximately 0.809091...) because the denominator contains prime factors other than 2 and 5.