Subtract 96/42 from 6/20, Solve 6/20

Subtract 96/42 from 6/20

1^st number: 6/20, 2^nd number: 2 12/42

6/20 - 96/42 is -139/70.

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,
96/42 = 96 × 10/42 × 10 = 960/420
Subtract the two like fractions:
126/420 - 960/420 = 126 - 960/420 = -834/420
After reducing the fraction, the answer is -139/70

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