Subtract 21/70 from 12/96, Solve 12/96

Subtract 21/70 from 12/96

12/96 - 21/70 is -7/40.

Find the least common denominator or LCM of the two denominators:
LCM of 96 and 70 is 3360

Next, find the equivalent fraction of both fractional numbers with denominator 3360
For the 1st fraction, since 96 × 35 = 3360,
12/96 = 12 × 35/96 × 35 = 420/3360
Likewise, for the 2nd fraction, since 70 × 48 = 3360,
21/70 = 21 × 48/70 × 48 = 1008/3360
Subtract the two like fractions:
420/3360 - 1008/3360 = 420 - 1008/3360 = -588/3360
After reducing the fraction, the answer is -7/40

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