Subtract 42/8 from 21/98
1st number: 21/98, 2nd number: 5 2/8
21/98 - 42/8 is -141/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 8 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 8 × 49 = 392,
42/8 = 42 × 49/8 × 49 = 2058/392 - Subtract the two like fractions:
84/392 - 2058/392 = 84 - 2058/392 = -1974/392 - After reducing the fraction, the answer is -141/28
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