What is 9/48 plus 15/21? (Answer: 101/112)

Exact Answer

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Problem: What is 9/48 plus 15/21?
Formula / Expression: 9/48 + 15/21
Final Answer: 101/112
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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 9/48 by 7, and multiply the numerator and denominator of 15/21 by 16 so both fractions share the common base 336.
Working: 9 × 7/48 × 7 = 63/336 and 15 × 16/21 × 16 = 240/336

Step 3: Add the Numerators
Now add the numerators (63 + 240 = 303) and keep the common denominator 336 unchanged.
Working: 63 + 240/336 = 303/336

Step 4: Simplify the Fraction to Lowest Terms
Find the Greatest Common Divisor (GCD) of 303 and 336, which is 3. Divide both the numerator and denominator by 3.
Working: 303 ÷ 3/336 ÷ 3 = 101/112

Step 5: Decimal & Percentage Representation
Dividing the numerator 101 by denominator 112 produces a repeating decimal (approximately 0.901786, or 90.1786%).
Working: 101 ÷ 112 = 0.901786 (90.1786%)

Key Values:
- Simplified Fraction: 101/112
- Mixed Number Form: 101/112
- Decimal Value: 0.901786
- Percentage: 90.1786%

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Solved with FractionsCalc:
https://fractionscalc.com/what-is-9-48-plus-15-21/
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9/48 + 15/21 = 101/112

Simplified Fraction

101/112

Mixed Number

Proper (101/112)

Decimal Value

0.901786

Percentage

90.1786%

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Step-by-Step Solution: 9/48 + 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 9/48 by 7, and multiply the numerator and denominator of 15/21 by 16 so both fractions share the common base 336.

9 × 7/48 × 7 = 63/336 and 15 × 16/21 × 16 = 240/336

Step 3

Add the Numerators

Now add the numerators (63 + 240 = 303) and keep the common denominator 336 unchanged.

63 + 240/336 = 303/336

Step 4

Simplify the Fraction to Lowest Terms

Find the Greatest Common Divisor (GCD) of 303 and 336, which is 3. Divide both the numerator and denominator by 3.

303 ÷ 3/336 ÷ 3 = 101/112

Step 5

Decimal & Percentage Representation

Dividing the numerator 101 by denominator 112 produces a repeating decimal (approximately 0.901786, or 90.1786%).

101 ÷ 112 = 0.901786 (90.1786%)

Visual Representation

The diagram below illustrates 9/48 plus 15/21 visually:

Summary & Alternative Representations

Property / Format	Value
Lowest Terms Fraction	`101/112`
Mixed Number Form	`101/112`
Decimal Form	`0.901786`
Percentage	`90.1786%`

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Frequently Asked Questions

What is 9/48 plus 15/21 as a fraction?

9/48 + 15/21 in simplest fraction form is 101/112.

What is 9/48 plus 15/21 as a decimal?

9/48 + 15/21 converted to a decimal is 0.901786.

What is 9/48 plus 15/21 as a percentage?

9/48 + 15/21 expressed as a percentage is 90.1786%.

Does 9/48 plus 15/21 result in a terminating or repeating decimal?

It results in a repeating decimal (approximately 0.901786...) because the denominator contains prime factors other than 2 and 5.