Answers

Subtract 70/40 from 40/56

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

40/56 - 70/40 is -29/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 40 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 56 × 5 = 280,
   40/56 = 40 × 5/56 × 5 = 200/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   70/40 = 70 × 7/40 × 7 = 490/280
4. Subtract the two like fractions:
   200/280 - 490/280 = 200 - 490/280 = -290/280
5. After reducing the fraction, the answer is -29/28

MathStep (Works offline)

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

Related: ⁸⁰/₅₆-⁷⁰/₄₀ ⁴⁰/₅₆-⁷⁰/₈₀

Subtract Fractions Calculator