Subtract 21/32 from 35/72
35/72 - 21/32 is -49/288.
Steps for subtracting fractions
- 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,
35/72 = 35 × 4/72 × 4 = 140/288 - Likewise, for the 2nd fraction, since 32 × 9 = 288,
21/32 = 21 × 9/32 × 9 = 189/288 - Subtract the two like fractions:
140/288 - 189/288 = 140 - 189/288 = -49/288
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