Subtract 20/16 from 25/7, Solve 3 4/7

Subtract 20/16 from 25/7

1^st number: 3 4/7, 2^nd number: 1 4/16

25/7 - 20/16 is 65/28.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 16 is 112

Next, find the equivalent fraction of both fractional numbers with denominator 112
For the 1st fraction, since 7 × 16 = 112,
25/7 = 25 × 16/7 × 16 = 400/112
Likewise, for the 2nd fraction, since 16 × 7 = 112,
20/16 = 20 × 7/16 × 7 = 140/112
Subtract the two like fractions:
400/112 - 140/112 = 400 - 140/112 = 260/112
After reducing the fraction, the answer is 65/28
In mixed form: 29/28

MathStep (Works offline)

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