Subtract 90/7 from 98/30
1st number: 3 8/30, 2nd number: 12 6/7
98/30 - 90/7 is -1007/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
98/30 = 98 × 7/30 × 7 = 686/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
90/7 = 90 × 30/7 × 30 = 2700/210 - Subtract the two like fractions:
686/210 - 2700/210 = 686 - 2700/210 = -2014/210 - After reducing the fraction, the answer is -1007/105
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