Subtract 63/32 from 18/72, Solve 18/72

Subtract 63/32 from 18/72

1^st number: 18/72, 2^nd number: 1 31/32

18/72 - 63/32 is -55/32.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 32 is 288

Next, find the equivalent fraction of both fractional numbers with denominator 288
For the 1st fraction, since 72 × 4 = 288,
18/72 = 18 × 4/72 × 4 = 72/288
Likewise, for the 2nd fraction, since 32 × 9 = 288,
63/32 = 63 × 9/32 × 9 = 567/288
Subtract the two like fractions:
72/288 - 567/288 = 72 - 567/288 = -495/288
After reducing the fraction, the answer is -55/32

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