Subtract 90/8 from 21/2
1st number: 10 1/2, 2nd number: 11 2/8
21/2 - 90/8 is -3/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 2 × 4 = 8,
21/2 = 21 × 4/2 × 4 = 84/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
90/8 = 90 × 1/8 × 1 = 90/8 - Subtract the two like fractions:
84/8 - 90/8 = 84 - 90/8 = -6/8 - After reducing the fraction, the answer is -3/4
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