Subtract 27/35 from 21/6, Solve 3 3/6

Subtract 27/35 from 21/6

1^st number: 3 3/6, 2^nd number: 27/35

21/6 - 27/35 is 191/70.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 35 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 6 × 35 = 210,
21/6 = 21 × 35/6 × 35 = 735/210
Likewise, for the 2nd fraction, since 35 × 6 = 210,
27/35 = 27 × 6/35 × 6 = 162/210
Subtract the two like fractions:
735/210 - 162/210 = 735 - 162/210 = 573/210
After reducing the fraction, the answer is 191/70
In mixed form: 251/70

MathStep (Works offline)

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