Subtract 36/32 from 30/20, Solve 1 10/20

Subtract 36/32 from 30/20

1^st number: 1 10/20, 2^nd number: 1 4/32

30/20 - 36/32 is 3/8.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 32 is 160

Next, find the equivalent fraction of both fractional numbers with denominator 160
For the 1st fraction, since 20 × 8 = 160,
30/20 = 30 × 8/20 × 8 = 240/160
Likewise, for the 2nd fraction, since 32 × 5 = 160,
36/32 = 36 × 5/32 × 5 = 180/160
Subtract the two like fractions:
240/160 - 180/160 = 240 - 180/160 = 60/160
After reducing the fraction, the answer is 3/8

MathStep (Works offline)

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