Subtract 48/42 from 20/35, Solve 20/35

Subtract 48/42 from 20/35

1^st number: 20/35, 2^nd number: 1 6/42

20/35 - 48/42 is -4/7.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 35 × 6 = 210,
20/35 = 20 × 6/35 × 6 = 120/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
48/42 = 48 × 5/42 × 5 = 240/210
Subtract the two like fractions:
120/210 - 240/210 = 120 - 240/210 = -120/210
After reducing the fraction, the answer is -4/7

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