Answers

Subtract 42/18 from 84/9

1^st number: 9 3/9, 2^nd number: 2 6/18

84/9 - 42/18 is 7/1.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 18 is 18
   
   Next, find the equivalent fraction of both fractional numbers with denominator 18
2. For the 1st fraction, since 9 × 2 = 18,
   84/9 = 84 × 2/9 × 2 = 168/18
3. Likewise, for the 2nd fraction, since 18 × 1 = 18,
   42/18 = 42 × 1/18 × 1 = 42/18
4. Subtract the two like fractions:
   168/18 - 42/18 = 168 - 42/18 = 126/18
5. After reducing the fraction, the answer is 7/1

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁸⁴/₉-⁸⁴/₁₈ ⁸⁴/₁₈-⁴²/₁₈ ⁸⁴/₉-⁴²/₃₆ ⁸⁴/₂₇-⁴²/₁₈ ⁸⁴/₉-⁴²/₅₄ ⁸⁴/₄₅-⁴²/₁₈ ⁸⁴/₉-⁴²/₉₀ ⁸⁴/₆₃-⁴²/₁₈

Subtract Fractions Calculator