Subtract 90/42 from 42/60, Solve 42/60

Subtract 90/42 from 42/60

1^st number: 42/60, 2^nd number: 2 6/42

42/60 - 90/42 is -101/70.

Find the least common denominator or LCM of the two denominators:
LCM of 60 and 42 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 60 × 7 = 420,
42/60 = 42 × 7/60 × 7 = 294/420
Likewise, for the 2nd fraction, since 42 × 10 = 420,
90/42 = 90 × 10/42 × 10 = 900/420
Subtract the two like fractions:
294/420 - 900/420 = 294 - 900/420 = -606/420
After reducing the fraction, the answer is -101/70

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