Subtract 45/18 from 8/25, Solve 8/25

Subtract 45/18 from 8/25

1^st number: 8/25, 2^nd number: 2 9/18

8/25 - 45/18 is -109/50.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 18 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 25 × 18 = 450,
8/25 = 8 × 18/25 × 18 = 144/450
Likewise, for the 2nd fraction, since 18 × 25 = 450,
45/18 = 45 × 25/18 × 25 = 1125/450
Subtract the two like fractions:
144/450 - 1125/450 = 144 - 1125/450 = -981/450
After reducing the fraction, the answer is -109/50

MathStep (Works offline)

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