Subtract 45/21 from 63/48, Solve 1 15/48

Subtract 45/21 from 63/48

1^st number: 1 15/48, 2^nd number: 2 3/21

63/48 - 45/21 is -93/112.

Find the least common denominator or LCM of the two denominators:
LCM of 48 and 21 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 48 × 7 = 336,
63/48 = 63 × 7/48 × 7 = 441/336
Likewise, for the 2nd fraction, since 21 × 16 = 336,
45/21 = 45 × 16/21 × 16 = 720/336
Subtract the two like fractions:
441/336 - 720/336 = 441 - 720/336 = -279/336
After reducing the fraction, the answer is -93/112

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