Subtract 80/49 from 42/16, Solve 2 10/16

Subtract 80/49 from 42/16

1^st number: 2 10/16, 2^nd number: 1 31/49

42/16 - 80/49 is 389/392.

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,
42/16 = 42 × 49/16 × 49 = 2058/784
Likewise, for the 2nd fraction, since 49 × 16 = 784,
80/49 = 80 × 16/49 × 16 = 1280/784
Subtract the two like fractions:
2058/784 - 1280/784 = 2058 - 1280/784 = 778/784
After reducing the fraction, the answer is 389/392

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