Subtract 21/8 from 90/6
1st number: 15 0/6, 2nd number: 2 5/8
90/6 - 21/8 is 99/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 8 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 6 × 4 = 24,
90/6 = 90 × 4/6 × 4 = 360/24 - Likewise, for the 2nd fraction, since 8 × 3 = 24,
21/8 = 21 × 3/8 × 3 = 63/24 - Subtract the two like fractions:
360/24 - 63/24 = 360 - 63/24 = 297/24 - After reducing the fraction, the answer is 99/8
- In mixed form: 123/8
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