Subtract 63/42 from 9/32, Solve 9/32

Subtract 63/42 from 9/32

1^st number: 9/32, 2^nd number: 1 21/42

9/32 - 63/42 is -39/32.

Find the least common denominator or LCM of the two denominators:
LCM of 32 and 42 is 672

Next, find the equivalent fraction of both fractional numbers with denominator 672
For the 1st fraction, since 32 × 21 = 672,
9/32 = 9 × 21/32 × 21 = 189/672
Likewise, for the 2nd fraction, since 42 × 16 = 672,
63/42 = 63 × 16/42 × 16 = 1008/672
Subtract the two like fractions:
189/672 - 1008/672 = 189 - 1008/672 = -819/672
After reducing the fraction, the answer is -39/32

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