Subtract 98/90 from 9/70
1st number: 9/70, 2nd number: 1 8/90
9/70 - 98/90 is -121/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
9/70 = 9 × 9/70 × 9 = 81/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
98/90 = 98 × 7/90 × 7 = 686/630 - Subtract the two like fractions:
81/630 - 686/630 = 81 - 686/630 = -605/630 - After reducing the fraction, the answer is -121/126
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