Subtract 90/40 from 70/98
1st number: 70/98, 2nd number: 2 10/40
70/98 - 90/40 is -43/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 40 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 98 × 20 = 1960,
70/98 = 70 × 20/98 × 20 = 1400/1960 - Likewise, for the 2nd fraction, since 40 × 49 = 1960,
90/40 = 90 × 49/40 × 49 = 4410/1960 - Subtract the two like fractions:
1400/1960 - 4410/1960 = 1400 - 4410/1960 = -3010/1960 - After reducing the fraction, the answer is -43/28
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