Subtract 98/64 from 80/42, Solve 1 38/42

Subtract 98/64 from 80/42

1^st number: 1 38/42, 2^nd number: 1 34/64

80/42 - 98/64 is 251/672.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 64 is 1344

Next, find the equivalent fraction of both fractional numbers with denominator 1344
For the 1st fraction, since 42 × 32 = 1344,
80/42 = 80 × 32/42 × 32 = 2560/1344
Likewise, for the 2nd fraction, since 64 × 21 = 1344,
98/64 = 98 × 21/64 × 21 = 2058/1344
Subtract the two like fractions:
2560/1344 - 2058/1344 = 2560 - 2058/1344 = 502/1344
After reducing the fraction, the answer is 251/672

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