Subtract 21/8 from 90/4
1st number: 22 2/4, 2nd number: 2 5/8
90/4 - 21/8 is 159/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 4 × 2 = 8,
90/4 = 90 × 2/4 × 2 = 180/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
21/8 = 21 × 1/8 × 1 = 21/8 - Subtract the two like fractions:
180/8 - 21/8 = 180 - 21/8 = 159/8 - In mixed form: 197/8
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