Subtract 63/7 from 84/90
1st number: 84/90, 2nd number: 9 0/7
84/90 - 63/7 is -121/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
84/90 = 84 × 7/90 × 7 = 588/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
63/7 = 63 × 90/7 × 90 = 5670/630 - Subtract the two like fractions:
588/630 - 5670/630 = 588 - 5670/630 = -5082/630 - After reducing the fraction, the answer is -121/15
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