Subtract 42/35 from 7/25, Solve 7/25

Subtract 42/35 from 7/25

1^st number: 7/25, 2^nd number: 1 7/35

7/25 - 42/35 is -23/25.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 35 is 175

Next, find the equivalent fraction of both fractional numbers with denominator 175
For the 1st fraction, since 25 × 7 = 175,
7/25 = 7 × 7/25 × 7 = 49/175
Likewise, for the 2nd fraction, since 35 × 5 = 175,
42/35 = 42 × 5/35 × 5 = 210/175
Subtract the two like fractions:
49/175 - 210/175 = 49 - 210/175 = -161/175
After reducing the fraction, the answer is -23/25

MathStep (Works offline)

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