Subtract 63/35 from 24/20, Solve 1 4/20

Subtract 63/35 from 24/20

1^st number: 1 4/20, 2^nd number: 1 28/35

24/20 - 63/35 is -3/5.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 35 is 140

Next, find the equivalent fraction of both fractional numbers with denominator 140
For the 1st fraction, since 20 × 7 = 140,
24/20 = 24 × 7/20 × 7 = 168/140
Likewise, for the 2nd fraction, since 35 × 4 = 140,
63/35 = 63 × 4/35 × 4 = 252/140
Subtract the two like fractions:
168/140 - 252/140 = 168 - 252/140 = -84/140
After reducing the fraction, the answer is -3/5

MathStep (Works offline)

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