Subtract 9/25 from 20/40, Solve 20/40

Subtract 9/25 from 20/40

20/40 - 9/25 is 7/50.

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

Next, find the equivalent fraction of both fractional numbers with denominator 200
For the 1st fraction, since 40 × 5 = 200,
20/40 = 20 × 5/40 × 5 = 100/200
Likewise, for the 2nd fraction, since 25 × 8 = 200,
9/25 = 9 × 8/25 × 8 = 72/200
Subtract the two like fractions:
100/200 - 72/200 = 100 - 72/200 = 28/200
After reducing the fraction, the answer is 7/50

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