Subtract 48/42 from 6/20, Solve 6/20

Subtract 48/42 from 6/20

1^st number: 6/20, 2^nd number: 1 6/42

6/20 - 48/42 is -59/70.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 20 × 21 = 420,
6/20 = 6 × 21/20 × 21 = 126/420
Likewise, for the 2nd fraction, since 42 × 10 = 420,
48/42 = 48 × 10/42 × 10 = 480/420
Subtract the two like fractions:
126/420 - 480/420 = 126 - 480/420 = -354/420
After reducing the fraction, the answer is -59/70

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