Subtract 2/90 from 81/7
1st number: 11 4/7, 2nd number: 2/90
81/7 - 2/90 is 3638/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
81/7 = 81 × 90/7 × 90 = 7290/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
2/90 = 2 × 7/90 × 7 = 14/630 - Subtract the two like fractions:
7290/630 - 14/630 = 7290 - 14/630 = 7276/630 - After reducing the fraction, the answer is 3638/315
- In mixed form: 11173/315
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