Subtract 96/54 from 21/72, Solve 21/72

Subtract 96/54 from 21/72

1^st number: 21/72, 2^nd number: 1 42/54

21/72 - 96/54 is -107/72.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 54 is 216

Next, find the equivalent fraction of both fractional numbers with denominator 216
For the 1st fraction, since 72 × 3 = 216,
21/72 = 21 × 3/72 × 3 = 63/216
Likewise, for the 2nd fraction, since 54 × 4 = 216,
96/54 = 96 × 4/54 × 4 = 384/216
Subtract the two like fractions:
63/216 - 384/216 = 63 - 384/216 = -321/216
After reducing the fraction, the answer is -107/72

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