Subtract 12/20 from 56/70, Solve 56/70

Subtract 12/20 from 56/70

56/70 - 12/20 is 1/5.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140

Next, find the equivalent fraction of both fractional numbers with denominator 140
For the 1st fraction, since 70 × 2 = 140,
56/70 = 56 × 2/70 × 2 = 112/140
Likewise, for the 2nd fraction, since 20 × 7 = 140,
12/20 = 12 × 7/20 × 7 = 84/140
Subtract the two like fractions:
112/140 - 84/140 = 112 - 84/140 = 28/140
After reducing the fraction, the answer is 1/5

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