Subtract 20/32 from 21/15
1st number: 1 6/15, 2nd number: 20/32
21/15 - 20/32 is 31/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 32 is 480
Next, find the equivalent fraction of both fractional numbers with denominator 480 - For the 1st fraction, since 15 × 32 = 480,
21/15 = 21 × 32/15 × 32 = 672/480 - Likewise, for the 2nd fraction, since 32 × 15 = 480,
20/32 = 20 × 15/32 × 15 = 300/480 - Subtract the two like fractions:
672/480 - 300/480 = 672 - 300/480 = 372/480 - After reducing the fraction, the answer is 31/40
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