Subtract 18/24 from 5/70, Solve 5/70

Subtract 18/24 from 5/70

5/70 - 18/24 is -19/28.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 24 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 70 × 12 = 840,
5/70 = 5 × 12/70 × 12 = 60/840
Likewise, for the 2nd fraction, since 24 × 35 = 840,
18/24 = 18 × 35/24 × 35 = 630/840
Subtract the two like fractions:
60/840 - 630/840 = 60 - 630/840 = -570/840
After reducing the fraction, the answer is -19/28

MathStep (Works offline)

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