Subtract 42/14 from 70/8, Solve 8 6/8

Subtract 42/14 from 70/8

1^st number: 8 6/8, 2^nd number: 3 0/14

70/8 - 42/14 is 23/4.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 14 is 56

Next, find the equivalent fraction of both fractional numbers with denominator 56
For the 1st fraction, since 8 × 7 = 56,
70/8 = 70 × 7/8 × 7 = 490/56
Likewise, for the 2nd fraction, since 14 × 4 = 56,
42/14 = 42 × 4/14 × 4 = 168/56
Subtract the two like fractions:
490/56 - 168/56 = 490 - 168/56 = 322/56
After reducing the fraction, the answer is 23/4
In mixed form: 53/4

MathStep (Works offline)

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