Answers

Subtract 70/35 from 18/36

1^st number: 18/36, 2^nd number: 2 0/35

18/36 - 70/35 is -3/2.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 35 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 36 × 35 = 1260,
   18/36 = 18 × 35/36 × 35 = 630/1260
3. Likewise, for the 2nd fraction, since 35 × 36 = 1260,
   70/35 = 70 × 36/35 × 36 = 2520/1260
4. Subtract the two like fractions:
   630/1260 - 2520/1260 = 630 - 2520/1260 = -1890/1260
5. After reducing the fraction, the answer is -3/2

MathStep (Works offline)

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

Related: ¹⁸/₇₂-⁷⁰/₃₅ ⁵⁴/₃₆-⁷⁰/₃₅ ⁹⁰/₃₆-⁷⁰/₃₅

Subtract Fractions Calculator