Subtract 70/21 from 90/98
1st number: 90/98, 2nd number: 3 7/21
90/98 - 70/21 is -355/147.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 21 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 98 × 3 = 294,
90/98 = 90 × 3/98 × 3 = 270/294 - Likewise, for the 2nd fraction, since 21 × 14 = 294,
70/21 = 70 × 14/21 × 14 = 980/294 - Subtract the two like fractions:
270/294 - 980/294 = 270 - 980/294 = -710/294 - After reducing the fraction, the answer is -355/147
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