Subtract 30/56 from 21/98
21/98 - 30/56 is -9/28.
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,
21/98 = 21 × 4/98 × 4 = 84/392 - Likewise, for the 2nd fraction, since 56 × 7 = 392,
30/56 = 30 × 7/56 × 7 = 210/392 - Subtract the two like fractions:
84/392 - 210/392 = 84 - 210/392 = -126/392 - After reducing the fraction, the answer is -9/28
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