Subtract 12/40 from 1/63, Solve 1/63

Subtract 12/40 from 1/63

1/63 - 12/40 is -179/630.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 40 is 2520

Next, find the equivalent fraction of both fractional numbers with denominator 2520
For the 1st fraction, since 63 × 40 = 2520,
1/63 = 1 × 40/63 × 40 = 40/2520
Likewise, for the 2nd fraction, since 40 × 63 = 2520,
12/40 = 12 × 63/40 × 63 = 756/2520
Subtract the two like fractions:
40/2520 - 756/2520 = 40 - 756/2520 = -716/2520
After reducing the fraction, the answer is -179/630

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