Subtract 21/3 from 90/8
1st number: 11 2/8, 2nd number: 7 0/3
90/8 - 21/3 is 17/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 3 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 8 × 3 = 24,
90/8 = 90 × 3/8 × 3 = 270/24 - Likewise, for the 2nd fraction, since 3 × 8 = 24,
21/3 = 21 × 8/3 × 8 = 168/24 - Subtract the two like fractions:
270/24 - 168/24 = 270 - 168/24 = 102/24 - After reducing the fraction, the answer is 17/4
- In mixed form: 41/4
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