Subtract 21/56 from 25/15, Solve 1 10/15

Subtract 21/56 from 25/15

1^st number: 1 10/15, 2^nd number: 21/56

25/15 - 21/56 is 31/24.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 56 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 15 × 56 = 840,
25/15 = 25 × 56/15 × 56 = 1400/840
Likewise, for the 2nd fraction, since 56 × 15 = 840,
21/56 = 21 × 15/56 × 15 = 315/840
Subtract the two like fractions:
1400/840 - 315/840 = 1400 - 315/840 = 1085/840
After reducing the fraction, the answer is 31/24
In mixed form: 17/24

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