What is 1/26 plus 9/13? (Answer: 19/26)

Exact Answer

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Problem: What is 1/26 plus 9/13?
Formula / Expression: 1/26 + 9/13
Final Answer: 19/26
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Step-by-Step Solution:

Step 1: Find the Least Common Denominator (LCD)
Notice that 26 is an exact multiple of 13 (13 × 2 = 26). The Least Common Denominator (LCD) is simply 26, meaning we only need to scale one fraction.
Working: LCD(26, 13) = 26

Step 2: Convert to Equivalent Fractions with Common Denominator 26
Multiply the numerator and denominator of 1/26 by 1, and multiply the numerator and denominator of 9/13 by 2 so both fractions share the common base 26.
Working: 1 × 1/26 × 1 = 1/26 and 9 × 2/13 × 2 = 18/26

Step 3: Add the Numerators
Now add the numerators (1 + 18 = 19) and keep the common denominator 26 unchanged.
Working: 1 + 18/26 = 19/26

Step 4: Check if the Fraction Can Be Simplified
The Greatest Common Divisor (GCD) of 19 and 26 is 1, confirming that 19/26 cannot be reduced further—it is already in its simplest irreducible form.
Working: 19/26

Step 5: Decimal & Percentage Representation
Dividing the numerator 19 by denominator 26 produces a repeating decimal (approximately 0.730769, or 73.0769%).
Working: 19 ÷ 26 = 0.730769 (73.0769%)

Key Values:
- Simplified Fraction: 19/26
- Mixed Number Form: 19/26
- Decimal Value: 0.730769
- Percentage: 73.0769%

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Solved with FractionsCalc:
https://fractionscalc.com/what-is-1-26-plus-9-13/
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1/26 + 9/13 = 19/26

Simplified Fraction

19/26

Mixed Number

Proper (19/26)

Decimal Value

0.730769

Percentage

73.0769%

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Step-by-Step Solution: 1/26 + 9/13

Step 1

Find the Least Common Denominator (LCD)

Notice that 26 is an exact multiple of 13 (13 × 2 = 26). The Least Common Denominator (LCD) is simply 26, meaning we only need to scale one fraction.

LCD(26, 13) = 26

Step 2

Convert to Equivalent Fractions with Common Denominator 26

Multiply the numerator and denominator of 1/26 by 1, and multiply the numerator and denominator of 9/13 by 2 so both fractions share the common base 26.

1 × 1/26 × 1 = 1/26 and 9 × 2/13 × 2 = 18/26

Step 3

Add the Numerators

Now add the numerators (1 + 18 = 19) and keep the common denominator 26 unchanged.

1 + 18/26 = 19/26

Step 4

Check if the Fraction Can Be Simplified

The Greatest Common Divisor (GCD) of 19 and 26 is 1, confirming that 19/26 cannot be reduced further—it is already in its simplest irreducible form.

19/26

Step 5

Decimal & Percentage Representation

Dividing the numerator 19 by denominator 26 produces a repeating decimal (approximately 0.730769, or 73.0769%).

19 ÷ 26 = 0.730769 (73.0769%)

Visual Representation

The diagram below illustrates 1/26 plus 9/13 visually:

Summary & Alternative Representations

Property / Format	Value
Lowest Terms Fraction	`19/26`
Mixed Number Form	`19/26`
Decimal Form	`0.730769`
Percentage	`73.0769%`

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Frequently Asked Questions

What is 1/26 plus 9/13 as a fraction?

1/26 + 9/13 in simplest fraction form is 19/26.

What is 1/26 plus 9/13 as a decimal?

1/26 + 9/13 converted to a decimal is 0.730769.

What is 1/26 plus 9/13 as a percentage?

1/26 + 9/13 expressed as a percentage is 73.0769%.

Does 1/26 plus 9/13 result in a terminating or repeating decimal?

It results in a repeating decimal (approximately 0.730769...) because the denominator contains prime factors other than 2 and 5.