Subtract 90/18 from 56/20
1st number: 2 16/20, 2nd number: 5 0/18
56/20 - 90/18 is -11/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
56/20 = 56 × 9/20 × 9 = 504/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
90/18 = 90 × 10/18 × 10 = 900/180 - Subtract the two like fractions:
504/180 - 900/180 = 504 - 900/180 = -396/180 - After reducing the fraction, the answer is -11/5
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