Subtract 7/90 from 81/2
1st number: 40 1/2, 2nd number: 7/90
81/2 - 7/90 is 1819/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
81/2 = 81 × 45/2 × 45 = 3645/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
7/90 = 7 × 1/90 × 1 = 7/90 - Subtract the two like fractions:
3645/90 - 7/90 = 3645 - 7/90 = 3638/90 - After reducing the fraction, the answer is 1819/45
- In mixed form: 4019/45
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