What is 8/48 plus 15/21? (Answer: 37/42)

Exact Answer

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Problem: What is 8/48 plus 15/21?
Formula / Expression: 8/48 + 15/21
Final Answer: 37/42
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Step-by-Step Solution:

Step 1: Find the Least Common Denominator (LCD)
The denominators 48 and 21 share a common factor (GCD = 3). Finding their Least Common Multiple gives an LCD of 336 (which is smaller than their product 48 × 21 = 1008, keeping the calculation simpler).
Working: LCD(48, 21) = 336

Step 2: Convert to Equivalent Fractions with Common Denominator 336
Multiply the numerator and denominator of 8/48 by 7, and multiply the numerator and denominator of 15/21 by 16 so both fractions share the common base 336.
Working: 8 × 7/48 × 7 = 56/336 and 15 × 16/21 × 16 = 240/336

Step 3: Add the Numerators
Now add the numerators (56 + 240 = 296) and keep the common denominator 336 unchanged.
Working: 56 + 240/336 = 296/336

Step 4: Simplify the Fraction to Lowest Terms
Find the Greatest Common Divisor (GCD) of 296 and 336, which is 8. Divide both the numerator and denominator by 8.
Working: 296 ÷ 8/336 ÷ 8 = 37/42

Step 5: Decimal & Percentage Representation
Dividing the numerator 37 by denominator 42 produces a repeating decimal (approximately 0.880952, or 88.0952%).
Working: 37 ÷ 42 = 0.880952 (88.0952%)

Key Values:
- Simplified Fraction: 37/42
- Mixed Number Form: 37/42
- Decimal Value: 0.880952
- Percentage: 88.0952%

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Solved with FractionsCalc:
https://fractionscalc.com/what-is-8-48-plus-15-21/
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8/48 + 15/21 = 37/42

Simplified Fraction

37/42

Mixed Number

Proper (37/42)

Decimal Value

0.880952

Percentage

88.0952%

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Step-by-Step Solution: 8/48 + 15/21

Step 1

Find the Least Common Denominator (LCD)

The denominators 48 and 21 share a common factor (GCD = 3). Finding their Least Common Multiple gives an LCD of 336 (which is smaller than their product 48 × 21 = 1008, keeping the calculation simpler).

LCD(48, 21) = 336

Step 2

Convert to Equivalent Fractions with Common Denominator 336

Multiply the numerator and denominator of 8/48 by 7, and multiply the numerator and denominator of 15/21 by 16 so both fractions share the common base 336.

8 × 7/48 × 7 = 56/336 and 15 × 16/21 × 16 = 240/336

Step 3

Add the Numerators

Now add the numerators (56 + 240 = 296) and keep the common denominator 336 unchanged.

56 + 240/336 = 296/336

Step 4

Simplify the Fraction to Lowest Terms

Find the Greatest Common Divisor (GCD) of 296 and 336, which is 8. Divide both the numerator and denominator by 8.

296 ÷ 8/336 ÷ 8 = 37/42

Step 5

Decimal & Percentage Representation

Dividing the numerator 37 by denominator 42 produces a repeating decimal (approximately 0.880952, or 88.0952%).

37 ÷ 42 = 0.880952 (88.0952%)

Visual Representation

The diagram below illustrates 8/48 plus 15/21 visually:

Summary & Alternative Representations

Property / Format	Value
Lowest Terms Fraction	`37/42`
Mixed Number Form	`37/42`
Decimal Form	`0.880952`
Percentage	`88.0952%`

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Frequently Asked Questions

What is 8/48 plus 15/21 as a fraction?

8/48 + 15/21 in simplest fraction form is 37/42.

What is 8/48 plus 15/21 as a decimal?

8/48 + 15/21 converted to a decimal is 0.880952.

What is 8/48 plus 15/21 as a percentage?

8/48 + 15/21 expressed as a percentage is 88.0952%.

Does 8/48 plus 15/21 result in a terminating or repeating decimal?

It results in a repeating decimal (approximately 0.880952...) because the denominator contains prime factors other than 2 and 5.