Subtract 21/8 from 90/2
1st number: 45 0/2, 2nd number: 2 5/8
90/2 - 21/8 is 339/8.
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,
90/2 = 90 × 4/2 × 4 = 360/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
21/8 = 21 × 1/8 × 1 = 21/8 - Subtract the two like fractions:
360/8 - 21/8 = 360 - 21/8 = 339/8 - In mixed form: 423/8
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