Subtract 90/20 from 90/8
1st number: 11 2/8, 2nd number: 4 10/20
90/8 - 90/20 is 27/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
90/8 = 90 × 5/8 × 5 = 450/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
90/20 = 90 × 2/20 × 2 = 180/40 - Subtract the two like fractions:
450/40 - 180/40 = 450 - 180/40 = 270/40 - After reducing the fraction, the answer is 27/4
- In mixed form: 63/4
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