Answers

Subtract 70/40 from 56/72

1^st number: 56/72, 2^nd number: 1 30/40

56/72 - 70/40 is -35/36.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 40 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   56/72 = 56 × 5/72 × 5 = 280/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   70/40 = 70 × 9/40 × 9 = 630/360
4. Subtract the two like fractions:
   280/360 - 630/360 = 280 - 630/360 = -350/360
5. After reducing the fraction, the answer is -35/36

MathStep (Works offline)

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

Related: ⁵⁶/₇₂-⁷⁰/₈₀

Subtract Fractions Calculator