Subtract 50/64 from 12/42, Solve 12/42

Subtract 50/64 from 12/42

12/42 - 50/64 is -111/224.

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,
12/42 = 12 × 32/42 × 32 = 384/1344
Likewise, for the 2nd fraction, since 64 × 21 = 1344,
50/64 = 50 × 21/64 × 21 = 1050/1344
Subtract the two like fractions:
384/1344 - 1050/1344 = 384 - 1050/1344 = -666/1344
After reducing the fraction, the answer is -111/224

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