Subtract 20/8 from 7/75, Solve 7/75

Subtract 20/8 from 7/75

1^st number: 7/75, 2^nd number: 2 4/8

7/75 - 20/8 is -361/150.

Find the least common denominator or LCM of the two denominators:
LCM of 75 and 8 is 600

Next, find the equivalent fraction of both fractional numbers with denominator 600
For the 1st fraction, since 75 × 8 = 600,
7/75 = 7 × 8/75 × 8 = 56/600
Likewise, for the 2nd fraction, since 8 × 75 = 600,
20/8 = 20 × 75/8 × 75 = 1500/600
Subtract the two like fractions:
56/600 - 1500/600 = 56 - 1500/600 = -1444/600
After reducing the fraction, the answer is -361/150

MathStep (Works offline)

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