What is 1/49 plus 6/21? (Answer: 15/49)

Exact Answer

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Problem: What is 1/49 plus 6/21?
Formula / Expression: 1/49 + 6/21
Final Answer: 15/49
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Step-by-Step Solution:

Step 1: Find the Least Common Denominator (LCD)
The denominators 49 and 21 share a common factor (GCD = 7). Finding their Least Common Multiple gives an LCD of 147 (which is smaller than their product 49 × 21 = 1029, keeping the calculation simpler).
Working: LCD(49, 21) = 147

Step 2: Convert to Equivalent Fractions with Common Denominator 147
Multiply the numerator and denominator of 1/49 by 3, and multiply the numerator and denominator of 6/21 by 7 so both fractions share the common base 147.
Working: 1 × 3/49 × 3 = 3/147 and 6 × 7/21 × 7 = 42/147

Step 3: Add the Numerators
Now add the numerators (3 + 42 = 45) and keep the common denominator 147 unchanged.
Working: 3 + 42/147 = 45/147

Step 4: Simplify the Fraction to Lowest Terms
Find the Greatest Common Divisor (GCD) of 45 and 147, which is 3. Divide both the numerator and denominator by 3.
Working: 45 ÷ 3/147 ÷ 3 = 15/49

Step 5: Decimal & Percentage Representation
Dividing the numerator 15 by denominator 49 produces a repeating decimal (approximately 0.306122, or 30.6122%).
Working: 15 ÷ 49 = 0.306122 (30.6122%)

Key Values:
- Simplified Fraction: 15/49
- Mixed Number Form: 15/49
- Decimal Value: 0.306122
- Percentage: 30.6122%

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Solved with FractionsCalc:
https://fractionscalc.com/what-is-1-49-plus-6-21/
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1/49 + 6/21 = 15/49

Simplified Fraction

15/49

Mixed Number

Proper (15/49)

Decimal Value

0.306122

Percentage

30.6122%

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Step-by-Step Solution: 1/49 + 6/21

Step 1

Find the Least Common Denominator (LCD)

The denominators 49 and 21 share a common factor (GCD = 7). Finding their Least Common Multiple gives an LCD of 147 (which is smaller than their product 49 × 21 = 1029, keeping the calculation simpler).

LCD(49, 21) = 147

Step 2

Convert to Equivalent Fractions with Common Denominator 147

Multiply the numerator and denominator of 1/49 by 3, and multiply the numerator and denominator of 6/21 by 7 so both fractions share the common base 147.

1 × 3/49 × 3 = 3/147 and 6 × 7/21 × 7 = 42/147

Step 3

Add the Numerators

Now add the numerators (3 + 42 = 45) and keep the common denominator 147 unchanged.

3 + 42/147 = 45/147

Step 4

Simplify the Fraction to Lowest Terms

Find the Greatest Common Divisor (GCD) of 45 and 147, which is 3. Divide both the numerator and denominator by 3.

45 ÷ 3/147 ÷ 3 = 15/49

Step 5

Decimal & Percentage Representation

Dividing the numerator 15 by denominator 49 produces a repeating decimal (approximately 0.306122, or 30.6122%).

15 ÷ 49 = 0.306122 (30.6122%)

Visual Representation

The diagram below illustrates 1/49 plus 6/21 visually:

Summary & Alternative Representations

Property / Format	Value
Lowest Terms Fraction	`15/49`
Mixed Number Form	`15/49`
Decimal Form	`0.306122`
Percentage	`30.6122%`

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Frequently Asked Questions

What is 1/49 plus 6/21 as a fraction?

1/49 + 6/21 in simplest fraction form is 15/49.

What is 1/49 plus 6/21 as a decimal?

1/49 + 6/21 converted to a decimal is 0.306122.

What is 1/49 plus 6/21 as a percentage?

1/49 + 6/21 expressed as a percentage is 30.6122%.

Does 1/49 plus 6/21 result in a terminating or repeating decimal?

It results in a repeating decimal (approximately 0.306122...) because the denominator contains prime factors other than 2 and 5.