Subtract 90/20 from 20/5
1st number: 4 0/5, 2nd number: 4 10/20
20/5 - 90/20 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 5 × 4 = 20,
20/5 = 20 × 4/5 × 4 = 80/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
90/20 = 90 × 1/20 × 1 = 90/20 - Subtract the two like fractions:
80/20 - 90/20 = 80 - 90/20 = -10/20 - After reducing the fraction, the answer is -1/2
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