Answers

Subtract 70/35 from 9/40

1^st number: 9/40, 2^nd number: 2 0/35

9/40 - 70/35 is -71/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 35 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 40 × 7 = 280,
   9/40 = 9 × 7/40 × 7 = 63/280
3. Likewise, for the 2nd fraction, since 35 × 8 = 280,
   70/35 = 70 × 8/35 × 8 = 560/280
4. Subtract the two like fractions:
   63/280 - 560/280 = 63 - 560/280 = -497/280
5. After reducing the fraction, the answer is -71/40

MathStep (Works offline)

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

Related: ¹⁸/₄₀-⁷⁰/₃₅ ⁹/₈₀-⁷⁰/₃₅ ²⁷/₄₀-⁷⁰/₃₅ ⁴⁵/₄₀-⁷⁰/₃₅ ⁶³/₄₀-⁷⁰/₃₅

Subtract Fractions Calculator