Answers

Subtract 42/28 from 36/20

1^st number: 1 16/20, 2^nd number: 1 14/28

36/20 - 42/28 is 3/10.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 28 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 20 × 7 = 140,
   36/20 = 36 × 7/20 × 7 = 252/140
3. Likewise, for the 2nd fraction, since 28 × 5 = 140,
   42/28 = 42 × 5/28 × 5 = 210/140
4. Subtract the two like fractions:
   252/140 - 210/140 = 252 - 210/140 = 42/140
5. After reducing the fraction, the answer is 3/10

MathStep (Works offline)

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

Related: ⁷²/₂₀-⁴²/₂₈ ³⁶/₂₀-⁸⁴/₂₈ ³⁶/₄₀-⁴²/₂₈ ³⁶/₂₀-⁴²/₅₆ ³⁶/₆₀-⁴²/₂₈ ³⁶/₂₀-⁴²/₈₄

Subtract Fractions Calculator