Subtract 40/98 from 21/56
21/56 - 40/98 is -13/392.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 98 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 56 × 7 = 392,
21/56 = 21 × 7/56 × 7 = 147/392 - Likewise, for the 2nd fraction, since 98 × 4 = 392,
40/98 = 40 × 4/98 × 4 = 160/392 - Subtract the two like fractions:
147/392 - 160/392 = 147 - 160/392 = -13/392
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