Subtract 48/63 from 7/40, Solve 7/40

Subtract 48/63 from 7/40

7/40 - 48/63 is -493/840.

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

Next, find the equivalent fraction of both fractional numbers with denominator 2520
For the 1st fraction, since 40 × 63 = 2520,
7/40 = 7 × 63/40 × 63 = 441/2520
Likewise, for the 2nd fraction, since 63 × 40 = 2520,
48/63 = 48 × 40/63 × 40 = 1920/2520
Subtract the two like fractions:
441/2520 - 1920/2520 = 441 - 1920/2520 = -1479/2520
After reducing the fraction, the answer is -493/840

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