Subtract 1/7 from 25/45, Solve 25/45

Subtract 1/7 from 25/45

25/45 - 1/7 is 26/63.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 45 × 7 = 315,
25/45 = 25 × 7/45 × 7 = 175/315
Likewise, for the 2nd fraction, since 7 × 45 = 315,
1/7 = 1 × 45/7 × 45 = 45/315
Subtract the two like fractions:
175/315 - 45/315 = 175 - 45/315 = 130/315
After reducing the fraction, the answer is 26/63

MathStep (Works offline)

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