Subtract 3/9 from 25/70, Solve 25/70

Subtract 3/9 from 25/70

25/70 - 3/9 is 1/42.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 9 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 70 × 9 = 630,
25/70 = 25 × 9/70 × 9 = 225/630
Likewise, for the 2nd fraction, since 9 × 70 = 630,
3/9 = 3 × 70/9 × 70 = 210/630
Subtract the two like fractions:
225/630 - 210/630 = 225 - 210/630 = 15/630
After reducing the fraction, the answer is 1/42

MathStep (Works offline)

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