Subtract 16/18 from 21/32
21/32 - 16/18 is -67/288.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 18 is 288
Next, find the equivalent fraction of both fractional numbers with denominator 288 - For the 1st fraction, since 32 × 9 = 288,
21/32 = 21 × 9/32 × 9 = 189/288 - Likewise, for the 2nd fraction, since 18 × 16 = 288,
16/18 = 16 × 16/18 × 16 = 256/288 - Subtract the two like fractions:
189/288 - 256/288 = 189 - 256/288 = -67/288
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