Subtract 35/21 from 40/56
1st number: 40/56, 2nd number: 1 14/21
40/56 - 35/21 is -20/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
40/56 = 40 × 3/56 × 3 = 120/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
35/21 = 35 × 8/21 × 8 = 280/168 - Subtract the two like fractions:
120/168 - 280/168 = 120 - 280/168 = -160/168 - After reducing the fraction, the answer is -20/21
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