Answers

Subtract 56/9 from 28/72

1^st number: 28/72, 2^nd number: 6 2/9

28/72 - 56/9 is -35/6.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 9 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 72 × 1 = 72,
   28/72 = 28 × 1/72 × 1 = 28/72
3. Likewise, for the 2nd fraction, since 9 × 8 = 72,
   56/9 = 56 × 8/9 × 8 = 448/72
4. Subtract the two like fractions:
   28/72 - 448/72 = 28 - 448/72 = -420/72
5. After reducing the fraction, the answer is -35/6

MathStep (Works offline)

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

Related: ⁵⁶/₇₂-⁵⁶/₉ ²⁸/₇₂-⁵⁶/₁₈ ⁸⁴/₇₂-⁵⁶/₉ ²⁸/₇₂-⁵⁶/₂₇ ²⁸/₇₂-⁵⁶/₄₅ ²⁸/₇₂-⁵⁶/₆₃

Subtract Fractions Calculator