Subtract 45/6 from 72/75, Solve 72/75

Subtract 45/6 from 72/75

1^st number: 72/75, 2^nd number: 7 3/6

72/75 - 45/6 is -327/50.

Find the least common denominator or LCM of the two denominators:
LCM of 75 and 6 is 150

Next, find the equivalent fraction of both fractional numbers with denominator 150
For the 1st fraction, since 75 × 2 = 150,
72/75 = 72 × 2/75 × 2 = 144/150
Likewise, for the 2nd fraction, since 6 × 25 = 150,
45/6 = 45 × 25/6 × 25 = 1125/150
Subtract the two like fractions:
144/150 - 1125/150 = 144 - 1125/150 = -981/150
After reducing the fraction, the answer is -327/50

MathStep (Works offline)

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