Subtract 21/32 from 21/36, Solve 21/36

Subtract 21/32 from 21/36

21/36 - 21/32 is -7/96.

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 32 is 288

Next, find the equivalent fraction of both fractional numbers with denominator 288
For the 1st fraction, since 36 × 8 = 288,
21/36 = 21 × 8/36 × 8 = 168/288
Likewise, for the 2nd fraction, since 32 × 9 = 288,
21/32 = 21 × 9/32 × 9 = 189/288
Subtract the two like fractions:
168/288 - 189/288 = 168 - 189/288 = -21/288
After reducing the fraction, the answer is -7/96

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