Subtract 42/49 from 9/25, Solve 9/25

Subtract 42/49 from 9/25

9/25 - 42/49 is -87/175.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 49 is 1225

Next, find the equivalent fraction of both fractional numbers with denominator 1225
For the 1st fraction, since 25 × 49 = 1225,
9/25 = 9 × 49/25 × 49 = 441/1225
Likewise, for the 2nd fraction, since 49 × 25 = 1225,
42/49 = 42 × 25/49 × 25 = 1050/1225
Subtract the two like fractions:
441/1225 - 1050/1225 = 441 - 1050/1225 = -609/1225
After reducing the fraction, the answer is -87/175

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