Subtract 1/90 from 81/7
1st number: 11 4/7, 2nd number: 1/90
81/7 - 1/90 is 7283/630.
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,
1/90 = 1 × 7/90 × 7 = 7/630 - Subtract the two like fractions:
7290/630 - 7/630 = 7290 - 7/630 = 7283/630 - In mixed form: 11353/630
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