Subtract 3/40 from 15/25, Solve 15/25

Subtract 3/40 from 15/25

15/25 - 3/40 is 21/40.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 40 is 200

Next, find the equivalent fraction of both fractional numbers with denominator 200
For the 1st fraction, since 25 × 8 = 200,
15/25 = 15 × 8/25 × 8 = 120/200
Likewise, for the 2nd fraction, since 40 × 5 = 200,
3/40 = 3 × 5/40 × 5 = 15/200
Subtract the two like fractions:
120/200 - 15/200 = 120 - 15/200 = 105/200
After reducing the fraction, the answer is 21/40

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