Subtract 1/3 from 90/14, Solve 6 6/14

Subtract 1/3 from 90/14

1^st number: 6 6/14, 2^nd number: 1/3

90/14 - 1/3 is 128/21.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 3 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 14 × 3 = 42,
90/14 = 90 × 3/14 × 3 = 270/42
Likewise, for the 2nd fraction, since 3 × 14 = 42,
1/3 = 1 × 14/3 × 14 = 14/42
Subtract the two like fractions:
270/42 - 14/42 = 270 - 14/42 = 256/42
After reducing the fraction, the answer is 128/21
In mixed form: 62/21

MathStep (Works offline)

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