Subtract 21/32 from 40/21
1st number: 1 19/21, 2nd number: 21/32
40/21 - 21/32 is 839/672.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 21 × 32 = 672,
40/21 = 40 × 32/21 × 32 = 1280/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
21/32 = 21 × 21/32 × 21 = 441/672 - Subtract the two like fractions:
1280/672 - 441/672 = 1280 - 441/672 = 839/672 - In mixed form: 1167/672
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