Subtract 28/56 from 18/98
18/98 - 28/56 is -31/98.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 56 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 98 × 4 = 392,
18/98 = 18 × 4/98 × 4 = 72/392 - Likewise, for the 2nd fraction, since 56 × 7 = 392,
28/56 = 28 × 7/56 × 7 = 196/392 - Subtract the two like fractions:
72/392 - 196/392 = 72 - 196/392 = -124/392 - After reducing the fraction, the answer is -31/98
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