What is 11/36 plus 9/13? (Answer: 467/468)

Exact Answer

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Problem: What is 11/36 plus 9/13?
Formula / Expression: 11/36 + 9/13
Final Answer: 467/468
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Step-by-Step Solution:

Step 1: Find the Least Common Denominator (LCD)
The denominators 36 and 13 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 36 × 13 = 468.
Working: LCD(36, 13) = 468

Step 2: Convert to Equivalent Fractions with Common Denominator 468
Multiply the numerator and denominator of 11/36 by 13, and multiply the numerator and denominator of 9/13 by 36 so both fractions share the common base 468.
Working: 11 × 13/36 × 13 = 143/468 and 9 × 36/13 × 36 = 324/468

Step 3: Add the Numerators
Now add the numerators (143 + 324 = 467) and keep the common denominator 468 unchanged.
Working: 143 + 324/468 = 467/468

Step 4: Check if the Fraction Can Be Simplified
The Greatest Common Divisor (GCD) of 467 and 468 is 1, confirming that 467/468 cannot be reduced further—it is already in its simplest irreducible form.
Working: 467/468

Step 5: Decimal & Percentage Representation
Dividing the numerator 467 by denominator 468 produces a repeating decimal (approximately 0.997863, or 99.7863%).
Working: 467 ÷ 468 = 0.997863 (99.7863%)

Key Values:
- Simplified Fraction: 467/468
- Mixed Number Form: 467/468
- Decimal Value: 0.997863
- Percentage: 99.7863%

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11/36 + 9/13 = 467/468

Simplified Fraction

467/468

Mixed Number

Proper (467/468)

Decimal Value

0.997863

Percentage

99.7863%

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Step-by-Step Solution: 11/36 + 9/13

Step 1

Find the Least Common Denominator (LCD)

The denominators 36 and 13 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 36 × 13 = 468.

LCD(36, 13) = 468

Step 2

Convert to Equivalent Fractions with Common Denominator 468

Multiply the numerator and denominator of 11/36 by 13, and multiply the numerator and denominator of 9/13 by 36 so both fractions share the common base 468.

11 × 13/36 × 13 = 143/468 and 9 × 36/13 × 36 = 324/468

Step 3

Add the Numerators

Now add the numerators (143 + 324 = 467) and keep the common denominator 468 unchanged.

143 + 324/468 = 467/468

Step 4

Check if the Fraction Can Be Simplified

The Greatest Common Divisor (GCD) of 467 and 468 is 1, confirming that 467/468 cannot be reduced further—it is already in its simplest irreducible form.

467/468

Step 5

Decimal & Percentage Representation

Dividing the numerator 467 by denominator 468 produces a repeating decimal (approximately 0.997863, or 99.7863%).

467 ÷ 468 = 0.997863 (99.7863%)

Visual Representation

The diagram below illustrates 11/36 plus 9/13 visually:

Summary & Alternative Representations

Property / Format	Value
Lowest Terms Fraction	`467/468`
Mixed Number Form	`467/468`
Decimal Form	`0.997863`
Percentage	`99.7863%`

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Frequently Asked Questions

What is 11/36 plus 9/13 as a fraction?

11/36 + 9/13 in simplest fraction form is 467/468.

What is 11/36 plus 9/13 as a decimal?

11/36 + 9/13 converted to a decimal is 0.997863.

What is 11/36 plus 9/13 as a percentage?

11/36 + 9/13 expressed as a percentage is 99.7863%.

Does 11/36 plus 9/13 result in a terminating or repeating decimal?

It results in a repeating decimal (approximately 0.997863...) because the denominator contains prime factors other than 2 and 5.