Subtract 18/4 from 21/98
1st number: 21/98, 2nd number: 4 2/4
21/98 - 18/4 is -30/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 4 is 196
Next, find the equivalent fraction of both fractional numbers with denominator 196 - For the 1st fraction, since 98 × 2 = 196,
21/98 = 21 × 2/98 × 2 = 42/196 - Likewise, for the 2nd fraction, since 4 × 49 = 196,
18/4 = 18 × 49/4 × 49 = 882/196 - Subtract the two like fractions:
42/196 - 882/196 = 42 - 882/196 = -840/196 - After reducing the fraction, the answer is -30/7
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