Subtract 21/49 from 15/8, Solve 1 7/8

Subtract 21/49 from 15/8

1^st number: 1 7/8, 2^nd number: 21/49

15/8 - 21/49 is 81/56.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 49 is 392

Next, find the equivalent fraction of both fractional numbers with denominator 392
For the 1st fraction, since 8 × 49 = 392,
15/8 = 15 × 49/8 × 49 = 735/392
Likewise, for the 2nd fraction, since 49 × 8 = 392,
21/49 = 21 × 8/49 × 8 = 168/392
Subtract the two like fractions:
735/392 - 168/392 = 735 - 168/392 = 567/392
After reducing the fraction, the answer is 81/56
In mixed form: 125/56

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