Subtract 1/56 from 70/49, Solve 1 21/49

Subtract 1/56 from 70/49

1^st number: 1 21/49, 2^nd number: 1/56

70/49 - 1/56 is 79/56.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 56 is 392

Next, find the equivalent fraction of both fractional numbers with denominator 392
For the 1st fraction, since 49 × 8 = 392,
70/49 = 70 × 8/49 × 8 = 560/392
Likewise, for the 2nd fraction, since 56 × 7 = 392,
1/56 = 1 × 7/56 × 7 = 7/392
Subtract the two like fractions:
560/392 - 7/392 = 560 - 7/392 = 553/392
After reducing the fraction, the answer is 79/56
In mixed form: 123/56

MathStep (Works offline)

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