What is 2/9 plus 12/23? (Answer: 154/207)

Exact Answer

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Problem: What is 2/9 plus 12/23?
Formula / Expression: 2/9 + 12/23
Final Answer: 154/207
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Step-by-Step Solution:

Step 1: Find the Least Common Denominator (LCD)
The denominators 9 and 23 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 9 × 23 = 207.
Working: LCD(9, 23) = 207

Step 2: Convert to Equivalent Fractions with Common Denominator 207
Multiply the numerator and denominator of 2/9 by 23, and multiply the numerator and denominator of 12/23 by 9 so both fractions share the common base 207.
Working: 2 × 23/9 × 23 = 46/207 and 12 × 9/23 × 9 = 108/207

Step 3: Add the Numerators
Now add the numerators (46 + 108 = 154) and keep the common denominator 207 unchanged.
Working: 46 + 108/207 = 154/207

Step 4: Check if the Fraction Can Be Simplified
The Greatest Common Divisor (GCD) of 154 and 207 is 1, confirming that 154/207 cannot be reduced further—it is already in its simplest irreducible form.
Working: 154/207

Step 5: Decimal & Percentage Representation
Dividing the numerator 154 by denominator 207 produces a repeating decimal (approximately 0.743961, or 74.3961%).
Working: 154 ÷ 207 = 0.743961 (74.3961%)

Key Values:
- Simplified Fraction: 154/207
- Mixed Number Form: 154/207
- Decimal Value: 0.743961
- Percentage: 74.3961%

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Solved with FractionsCalc:
https://fractionscalc.com/what-is-2-9-plus-12-23/
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2/9 + 12/23 = 154/207

Simplified Fraction

154/207

Mixed Number

Proper (154/207)

Decimal Value

0.743961

Percentage

74.3961%

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Step-by-Step Solution: 2/9 + 12/23

Step 1

Find the Least Common Denominator (LCD)

The denominators 9 and 23 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 9 × 23 = 207.

LCD(9, 23) = 207

Step 2

Convert to Equivalent Fractions with Common Denominator 207

Multiply the numerator and denominator of 2/9 by 23, and multiply the numerator and denominator of 12/23 by 9 so both fractions share the common base 207.

2 × 23/9 × 23 = 46/207 and 12 × 9/23 × 9 = 108/207

Step 3

Add the Numerators

Now add the numerators (46 + 108 = 154) and keep the common denominator 207 unchanged.

46 + 108/207 = 154/207

Step 4

Check if the Fraction Can Be Simplified

The Greatest Common Divisor (GCD) of 154 and 207 is 1, confirming that 154/207 cannot be reduced further—it is already in its simplest irreducible form.

154/207

Step 5

Decimal & Percentage Representation

Dividing the numerator 154 by denominator 207 produces a repeating decimal (approximately 0.743961, or 74.3961%).

154 ÷ 207 = 0.743961 (74.3961%)

Visual Representation

The diagram below illustrates 2/9 plus 12/23 visually:

Summary & Alternative Representations

Property / Format	Value
Lowest Terms Fraction	`154/207`
Mixed Number Form	`154/207`
Decimal Form	`0.743961`
Percentage	`74.3961%`

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Frequently Asked Questions

What is 2/9 plus 12/23 as a fraction?

2/9 + 12/23 in simplest fraction form is 154/207.

What is 2/9 plus 12/23 as a decimal?

2/9 + 12/23 converted to a decimal is 0.743961.

What is 2/9 plus 12/23 as a percentage?

2/9 + 12/23 expressed as a percentage is 74.3961%.

Does 2/9 plus 12/23 result in a terminating or repeating decimal?

It results in a repeating decimal (approximately 0.743961...) because the denominator contains prime factors other than 2 and 5.