Subtract 21/32 from 9/30
9/30 - 21/32 is -57/160.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 32 is 480
Next, find the equivalent fraction of both fractional numbers with denominator 480 - For the 1st fraction, since 30 × 16 = 480,
9/30 = 9 × 16/30 × 16 = 144/480 - Likewise, for the 2nd fraction, since 32 × 15 = 480,
21/32 = 21 × 15/32 × 15 = 315/480 - Subtract the two like fractions:
144/480 - 315/480 = 144 - 315/480 = -171/480 - After reducing the fraction, the answer is -57/160
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