What is 2/9 plus 5/17? (Answer: 79/153)

Exact Answer

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Problem: What is 2/9 plus 5/17?
Formula / Expression: 2/9 + 5/17
Final Answer: 79/153
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Step-by-Step Solution:

Step 1: Find the Least Common Denominator (LCD)
The denominators 9 and 17 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 9 × 17 = 153.
Working: LCD(9, 17) = 153

Step 2: Convert to Equivalent Fractions with Common Denominator 153
Multiply the numerator and denominator of 2/9 by 17, and multiply the numerator and denominator of 5/17 by 9 so both fractions share the common base 153.
Working: 2 × 17/9 × 17 = 34/153 and 5 × 9/17 × 9 = 45/153

Step 3: Add the Numerators
Now add the numerators (34 + 45 = 79) and keep the common denominator 153 unchanged.
Working: 34 + 45/153 = 79/153

Step 4: Check if the Fraction Can Be Simplified
The Greatest Common Divisor (GCD) of 79 and 153 is 1, confirming that 79/153 cannot be reduced further—it is already in its simplest irreducible form.
Working: 79/153

Step 5: Decimal & Percentage Representation
Dividing the numerator 79 by denominator 153 produces a repeating decimal (approximately 0.51634, or 51.634%).
Working: 79 ÷ 153 = 0.51634 (51.634%)

Key Values:
- Simplified Fraction: 79/153
- Mixed Number Form: 79/153
- Decimal Value: 0.51634
- Percentage: 51.634%

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Solved with FractionsCalc:
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2/9 + 5/17 = 79/153

Simplified Fraction

79/153

Mixed Number

Proper (79/153)

Decimal Value

0.51634

Percentage

51.634%

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Step-by-Step Solution: 2/9 + 5/17

Step 1

Find the Least Common Denominator (LCD)

The denominators 9 and 17 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 9 × 17 = 153.

LCD(9, 17) = 153

Step 2

Convert to Equivalent Fractions with Common Denominator 153

Multiply the numerator and denominator of 2/9 by 17, and multiply the numerator and denominator of 5/17 by 9 so both fractions share the common base 153.

2 × 17/9 × 17 = 34/153 and 5 × 9/17 × 9 = 45/153

Step 3

Add the Numerators

Now add the numerators (34 + 45 = 79) and keep the common denominator 153 unchanged.

34 + 45/153 = 79/153

Step 4

Check if the Fraction Can Be Simplified

The Greatest Common Divisor (GCD) of 79 and 153 is 1, confirming that 79/153 cannot be reduced further—it is already in its simplest irreducible form.

79/153

Step 5

Decimal & Percentage Representation

Dividing the numerator 79 by denominator 153 produces a repeating decimal (approximately 0.51634, or 51.634%).

79 ÷ 153 = 0.51634 (51.634%)

Visual Representation

The diagram below illustrates 2/9 plus 5/17 visually:

Summary & Alternative Representations

Property / Format	Value
Lowest Terms Fraction	`79/153`
Mixed Number Form	`79/153`
Decimal Form	`0.51634`
Percentage	`51.634%`

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Frequently Asked Questions

What is 2/9 plus 5/17 as a fraction?

2/9 + 5/17 in simplest fraction form is 79/153.

What is 2/9 plus 5/17 as a decimal?

2/9 + 5/17 converted to a decimal is 0.51634.

What is 2/9 plus 5/17 as a percentage?

2/9 + 5/17 expressed as a percentage is 51.634%.

Does 2/9 plus 5/17 result in a terminating or repeating decimal?

It results in a repeating decimal (approximately 0.51634...) because the denominator contains prime factors other than 2 and 5.