Subtract 48/42 from 42/50, Solve 42/50

Subtract 48/42 from 42/50

1^st number: 42/50, 2^nd number: 1 6/42

42/50 - 48/42 is -53/175.

Find the least common denominator or LCM of the two denominators:
LCM of 50 and 42 is 1050

Next, find the equivalent fraction of both fractional numbers with denominator 1050
For the 1st fraction, since 50 × 21 = 1050,
42/50 = 42 × 21/50 × 21 = 882/1050
Likewise, for the 2nd fraction, since 42 × 25 = 1050,
48/42 = 48 × 25/42 × 25 = 1200/1050
Subtract the two like fractions:
882/1050 - 1200/1050 = 882 - 1200/1050 = -318/1050
After reducing the fraction, the answer is -53/175

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