Subtract 21/28 from 7/25, Solve 7/25

Subtract 21/28 from 7/25

7/25 - 21/28 is -47/100.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 28 is 700

Next, find the equivalent fraction of both fractional numbers with denominator 700
For the 1st fraction, since 25 × 28 = 700,
7/25 = 7 × 28/25 × 28 = 196/700
Likewise, for the 2nd fraction, since 28 × 25 = 700,
21/28 = 21 × 25/28 × 25 = 525/700
Subtract the two like fractions:
196/700 - 525/700 = 196 - 525/700 = -329/700
After reducing the fraction, the answer is -47/100

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