Subtract 12/70 from 3/75, Solve 3/75

Subtract 12/70 from 3/75

3/75 - 12/70 is -23/175.

Find the least common denominator or LCM of the two denominators:
LCM of 75 and 70 is 1050

Next, find the equivalent fraction of both fractional numbers with denominator 1050
For the 1st fraction, since 75 × 14 = 1050,
3/75 = 3 × 14/75 × 14 = 42/1050
Likewise, for the 2nd fraction, since 70 × 15 = 1050,
12/70 = 12 × 15/70 × 15 = 180/1050
Subtract the two like fractions:
42/1050 - 180/1050 = 42 - 180/1050 = -138/1050
After reducing the fraction, the answer is -23/175

MathStep (Works offline)

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