Subtract 63/42 from 9/48, Solve 9/48

Subtract 63/42 from 9/48

1^st number: 9/48, 2^nd number: 1 21/42

9/48 - 63/42 is -21/16.

Find the least common denominator or LCM of the two denominators:
LCM of 48 and 42 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 48 × 7 = 336,
9/48 = 9 × 7/48 × 7 = 63/336
Likewise, for the 2nd fraction, since 42 × 8 = 336,
63/42 = 63 × 8/42 × 8 = 504/336
Subtract the two like fractions:
63/336 - 504/336 = 63 - 504/336 = -441/336
After reducing the fraction, the answer is -21/16

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