Subtract 63/70 from 8/12, Solve 8/12

Subtract 63/70 from 8/12

8/12 - 63/70 is -7/30.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 12 × 35 = 420,
8/12 = 8 × 35/12 × 35 = 280/420
Likewise, for the 2nd fraction, since 70 × 6 = 420,
63/70 = 63 × 6/70 × 6 = 378/420
Subtract the two like fractions:
280/420 - 378/420 = 280 - 378/420 = -98/420
After reducing the fraction, the answer is -7/30

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