What is 2/19 plus 7/9? (Answer: 151/171)

Exact Answer

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Problem: What is 2/19 plus 7/9?
Formula / Expression: 2/19 + 7/9
Final Answer: 151/171
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Step-by-Step Solution:

Step 1: Find the Least Common Denominator (LCD)
The denominators 19 and 9 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 19 × 9 = 171.
Working: LCD(19, 9) = 171

Step 2: Convert to Equivalent Fractions with Common Denominator 171
Multiply the numerator and denominator of 2/19 by 9, and multiply the numerator and denominator of 7/9 by 19 so both fractions share the common base 171.
Working: 2 × 9/19 × 9 = 18/171 and 7 × 19/9 × 19 = 133/171

Step 3: Add the Numerators
Now add the numerators (18 + 133 = 151) and keep the common denominator 171 unchanged.
Working: 18 + 133/171 = 151/171

Step 4: Check if the Fraction Can Be Simplified
The Greatest Common Divisor (GCD) of 151 and 171 is 1, confirming that 151/171 cannot be reduced further—it is already in its simplest irreducible form.
Working: 151/171

Step 5: Decimal & Percentage Representation
Dividing the numerator 151 by denominator 171 produces a repeating decimal (approximately 0.883041, or 88.3041%).
Working: 151 ÷ 171 = 0.883041 (88.3041%)

Key Values:
- Simplified Fraction: 151/171
- Mixed Number Form: 151/171
- Decimal Value: 0.883041
- Percentage: 88.3041%

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Solved with FractionsCalc:
https://fractionscalc.com/what-is-2-19-plus-7-9/
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2/19 + 7/9 = 151/171

Simplified Fraction

151/171

Mixed Number

Proper (151/171)

Decimal Value

0.883041

Percentage

88.3041%

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Step-by-Step Solution: 2/19 + 7/9

Step 1

Find the Least Common Denominator (LCD)

The denominators 19 and 9 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 19 × 9 = 171.

LCD(19, 9) = 171

Step 2

Convert to Equivalent Fractions with Common Denominator 171

Multiply the numerator and denominator of 2/19 by 9, and multiply the numerator and denominator of 7/9 by 19 so both fractions share the common base 171.

2 × 9/19 × 9 = 18/171 and 7 × 19/9 × 19 = 133/171

Step 3

Add the Numerators

Now add the numerators (18 + 133 = 151) and keep the common denominator 171 unchanged.

18 + 133/171 = 151/171

Step 4

Check if the Fraction Can Be Simplified

The Greatest Common Divisor (GCD) of 151 and 171 is 1, confirming that 151/171 cannot be reduced further—it is already in its simplest irreducible form.

151/171

Step 5

Decimal & Percentage Representation

Dividing the numerator 151 by denominator 171 produces a repeating decimal (approximately 0.883041, or 88.3041%).

151 ÷ 171 = 0.883041 (88.3041%)

Visual Representation

The diagram below illustrates 2/19 plus 7/9 visually:

Summary & Alternative Representations

Property / Format	Value
Lowest Terms Fraction	`151/171`
Mixed Number Form	`151/171`
Decimal Form	`0.883041`
Percentage	`88.3041%`

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Frequently Asked Questions

What is 2/19 plus 7/9 as a fraction?

2/19 + 7/9 in simplest fraction form is 151/171.

What is 2/19 plus 7/9 as a decimal?

2/19 + 7/9 converted to a decimal is 0.883041.

What is 2/19 plus 7/9 as a percentage?

2/19 + 7/9 expressed as a percentage is 88.3041%.

Does 2/19 plus 7/9 result in a terminating or repeating decimal?

It results in a repeating decimal (approximately 0.883041...) because the denominator contains prime factors other than 2 and 5.