Subtract 70/49 from 20/16, Solve 1 4/16

Subtract 70/49 from 20/16

1^st number: 1 4/16, 2^nd number: 1 21/49

20/16 - 70/49 is -5/28.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 49 is 784

Next, find the equivalent fraction of both fractional numbers with denominator 784
For the 1st fraction, since 16 × 49 = 784,
20/16 = 20 × 49/16 × 49 = 980/784
Likewise, for the 2nd fraction, since 49 × 16 = 784,
70/49 = 70 × 16/49 × 16 = 1120/784
Subtract the two like fractions:
980/784 - 1120/784 = 980 - 1120/784 = -140/784
After reducing the fraction, the answer is -5/28

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