Subtract 81/90 from 32/20
1st number: 1 12/20, 2nd number: 81/90
32/20 - 81/90 is 7/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
32/20 = 32 × 9/20 × 9 = 288/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
81/90 = 81 × 2/90 × 2 = 162/180 - Subtract the two like fractions:
288/180 - 162/180 = 288 - 162/180 = 126/180 - After reducing the fraction, the answer is 7/10
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