Subtract 90/18 from 16/20
1st number: 16/20, 2nd number: 5 0/18
16/20 - 90/18 is -21/5.
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,
16/20 = 16 × 9/20 × 9 = 144/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
90/18 = 90 × 10/18 × 10 = 900/180 - Subtract the two like fractions:
144/180 - 900/180 = 144 - 900/180 = -756/180 - After reducing the fraction, the answer is -21/5
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