What is 8/21 plus 17/44? (Answer: 709/924)

Exact Answer

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Problem: What is 8/21 plus 17/44?
Formula / Expression: 8/21 + 17/44
Final Answer: 709/924
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Step-by-Step Solution:

Step 1: Find the Least Common Denominator (LCD)
The denominators 21 and 44 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 21 × 44 = 924.
Working: LCD(21, 44) = 924

Step 2: Convert to Equivalent Fractions with Common Denominator 924
Multiply the numerator and denominator of 8/21 by 44, and multiply the numerator and denominator of 17/44 by 21 so both fractions share the common base 924.
Working: 8 × 44/21 × 44 = 352/924 and 17 × 21/44 × 21 = 357/924

Step 3: Add the Numerators
Now add the numerators (352 + 357 = 709) and keep the common denominator 924 unchanged.
Working: 352 + 357/924 = 709/924

Step 4: Check if the Fraction Can Be Simplified
The Greatest Common Divisor (GCD) of 709 and 924 is 1, confirming that 709/924 cannot be reduced further—it is already in its simplest irreducible form.
Working: 709/924

Step 5: Decimal & Percentage Representation
Dividing the numerator 709 by denominator 924 produces a repeating decimal (approximately 0.767316, or 76.7316%).
Working: 709 ÷ 924 = 0.767316 (76.7316%)

Key Values:
- Simplified Fraction: 709/924
- Mixed Number Form: 709/924
- Decimal Value: 0.767316
- Percentage: 76.7316%

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Solved with FractionsCalc:
https://fractionscalc.com/what-is-8-21-plus-17-44/
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8/21 + 17/44 = 709/924

Simplified Fraction

709/924

Mixed Number

Proper (709/924)

Decimal Value

0.767316

Percentage

76.7316%

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Step-by-Step Solution: 8/21 + 17/44

Step 1

Find the Least Common Denominator (LCD)

The denominators 21 and 44 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 21 × 44 = 924.

LCD(21, 44) = 924

Step 2

Convert to Equivalent Fractions with Common Denominator 924

Multiply the numerator and denominator of 8/21 by 44, and multiply the numerator and denominator of 17/44 by 21 so both fractions share the common base 924.

8 × 44/21 × 44 = 352/924 and 17 × 21/44 × 21 = 357/924

Step 3

Add the Numerators

Now add the numerators (352 + 357 = 709) and keep the common denominator 924 unchanged.

352 + 357/924 = 709/924

Step 4

Check if the Fraction Can Be Simplified

The Greatest Common Divisor (GCD) of 709 and 924 is 1, confirming that 709/924 cannot be reduced further—it is already in its simplest irreducible form.

709/924

Step 5

Decimal & Percentage Representation

Dividing the numerator 709 by denominator 924 produces a repeating decimal (approximately 0.767316, or 76.7316%).

709 ÷ 924 = 0.767316 (76.7316%)

Visual Representation

The diagram below illustrates 8/21 plus 17/44 visually:

Summary & Alternative Representations

Property / Format	Value
Lowest Terms Fraction	`709/924`
Mixed Number Form	`709/924`
Decimal Form	`0.767316`
Percentage	`76.7316%`

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Frequently Asked Questions

What is 8/21 plus 17/44 as a fraction?

8/21 + 17/44 in simplest fraction form is 709/924.

What is 8/21 plus 17/44 as a decimal?

8/21 + 17/44 converted to a decimal is 0.767316.

What is 8/21 plus 17/44 as a percentage?

8/21 + 17/44 expressed as a percentage is 76.7316%.

Does 8/21 plus 17/44 result in a terminating or repeating decimal?

It results in a repeating decimal (approximately 0.767316...) because the denominator contains prime factors other than 2 and 5.