Subtract 72/42 from 24/25, Solve 24/25

Subtract 72/42 from 24/25

1^st number: 24/25, 2^nd number: 1 30/42

24/25 - 72/42 is -132/175.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 42 is 1050

Next, find the equivalent fraction of both fractional numbers with denominator 1050
For the 1st fraction, since 25 × 42 = 1050,
24/25 = 24 × 42/25 × 42 = 1008/1050
Likewise, for the 2nd fraction, since 42 × 25 = 1050,
72/42 = 72 × 25/42 × 25 = 1800/1050
Subtract the two like fractions:
1008/1050 - 1800/1050 = 1008 - 1800/1050 = -792/1050
After reducing the fraction, the answer is -132/175

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