Subtract 36/5 from 90/20
1st number: 4 10/20, 2nd number: 7 1/5
90/20 - 36/5 is -27/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
90/20 = 90 × 1/20 × 1 = 90/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
36/5 = 36 × 4/5 × 4 = 144/20 - Subtract the two like fractions:
90/20 - 144/20 = 90 - 144/20 = -54/20 - After reducing the fraction, the answer is -27/10
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