Subtract 63/56 from 40/42
1st number: 40/42, 2nd number: 1 7/56
40/42 - 63/56 is -29/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
40/42 = 40 × 4/42 × 4 = 160/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
63/56 = 63 × 3/56 × 3 = 189/168 - Subtract the two like fractions:
160/168 - 189/168 = 160 - 189/168 = -29/168
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