Subtract 90/36 from 8/35, Solve 8/35

Subtract 90/36 from 8/35

1^st number: 8/35, 2^nd number: 2 18/36

8/35 - 90/36 is -159/70.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 36 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 35 × 36 = 1260,
8/35 = 8 × 36/35 × 36 = 288/1260
Likewise, for the 2nd fraction, since 36 × 35 = 1260,
90/36 = 90 × 35/36 × 35 = 3150/1260
Subtract the two like fractions:
288/1260 - 3150/1260 = 288 - 3150/1260 = -2862/1260
After reducing the fraction, the answer is -159/70

MathStep (Works offline)

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