Subtract 56/48 from 20/70, Solve 20/70

Subtract 56/48 from 20/70

1^st number: 20/70, 2^nd number: 1 8/48

20/70 - 56/48 is -37/42.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 48 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 70 × 24 = 1680,
20/70 = 20 × 24/70 × 24 = 480/1680
Likewise, for the 2nd fraction, since 48 × 35 = 1680,
56/48 = 56 × 35/48 × 35 = 1960/1680
Subtract the two like fractions:
480/1680 - 1960/1680 = 480 - 1960/1680 = -1480/1680
After reducing the fraction, the answer is -37/42

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