Subtract 15/10 from 25/28, Solve 25/28

Subtract 15/10 from 25/28

1^st number: 25/28, 2^nd number: 1 5/10

25/28 - 15/10 is -17/28.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 10 is 140

Next, find the equivalent fraction of both fractional numbers with denominator 140
For the 1st fraction, since 28 × 5 = 140,
25/28 = 25 × 5/28 × 5 = 125/140
Likewise, for the 2nd fraction, since 10 × 14 = 140,
15/10 = 15 × 14/10 × 14 = 210/140
Subtract the two like fractions:
125/140 - 210/140 = 125 - 210/140 = -85/140
After reducing the fraction, the answer is -17/28

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