Subtract 81/32 from 90/20
1st number: 4 10/20, 2nd number: 2 17/32
90/20 - 81/32 is 63/32.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 32 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 20 × 8 = 160,
90/20 = 90 × 8/20 × 8 = 720/160 - Likewise, for the 2nd fraction, since 32 × 5 = 160,
81/32 = 81 × 5/32 × 5 = 405/160 - Subtract the two like fractions:
720/160 - 405/160 = 720 - 405/160 = 315/160 - After reducing the fraction, the answer is 63/32
- In mixed form: 131/32
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