What is 23/36 plus 9/13?
23/36 plus 9/13 equals 623/468 (or 1 155/468 as a mixed number) (or 1.331197 in decimal form). Learn the step-by-step solution to add 23/36 and 9/13 using Least Common Denominator and simplification.
Exact Answer
23/36 + 9/13 = 623/468
Simplified Fraction
623/468
Mixed Number
1 155/468
Decimal Value
1.331197
Percentage
133.1197%
Step-by-Step Solution: 23/36 + 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 23/36 by 13, and multiply the numerator and denominator of 9/13 by 36 so both fractions share the common base 468.
23 × 13/36 × 13 = 299/468 and 9 × 36/13 × 36 = 324/468
Step 3
Add the Numerators
Now add the numerators (299 + 324 = 623) and keep the common denominator 468 unchanged.
299 + 324/468 = 623/468
Step 4
Check if the Fraction Can Be Simplified
The Greatest Common Divisor (GCD) of 623 and 468 is 1, confirming that 623/468 cannot be reduced further—it is already in its simplest irreducible form.
623/468
Step 5
Convert Improper Fraction to a Mixed Number
Since the numerator (623) is greater than the denominator (468), divide 623 by 468: it goes in 1 whole time(s) with a remainder of 155, giving the mixed number 1 155/468.
623/468 = 1155/468
Step 6
Decimal & Percentage Representation
Dividing the numerator 623 by denominator 468 produces a repeating decimal (approximately 1.331197, or 133.1197%).
623 ÷ 468 = 1.331197 (133.1197%)
Visual Representation
The diagram below illustrates 23/36 plus 9/13 visually:
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Summary & Alternative Representations
| Property / Format | Value |
|---|---|
| Lowest Terms Fraction | 623/468 |
| Mixed Number Form | 1 155/468 |
| Decimal Form | 1.331197 |
| Percentage | 133.1197% |
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Frequently Asked Questions
What is 23/36 plus 9/13 as a fraction?
23/36 + 9/13 in simplest fraction form is 623/468 (or 1 155/468 as a mixed number).
What is 23/36 plus 9/13 as a decimal?
23/36 + 9/13 converted to a decimal is 1.331197.
What is 23/36 plus 9/13 as a percentage?
23/36 + 9/13 expressed as a percentage is 133.1197%.
How do you write 23/36 plus 9/13 as a mixed number?
Because the numerator is greater than the denominator, the improper fraction 623/468 can be written as the mixed number 1 155/468.
Does 23/36 plus 9/13 result in a terminating or repeating decimal?
It results in a repeating decimal (approximately 1.331197...) because the denominator contains prime factors other than 2 and 5.