Subtract 12/32 from 21/30
21/30 - 12/32 is 13/40.
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,
21/30 = 21 × 16/30 × 16 = 336/480 - Likewise, for the 2nd fraction, since 32 × 15 = 480,
12/32 = 12 × 15/32 × 15 = 180/480 - Subtract the two like fractions:
336/480 - 180/480 = 336 - 180/480 = 156/480 - After reducing the fraction, the answer is 13/40
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