Subtract 90/20 from 40/2
1st number: 20 0/2, 2nd number: 4 10/20
40/2 - 90/20 is 31/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 2 × 10 = 20,
40/2 = 40 × 10/2 × 10 = 400/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
90/20 = 90 × 1/20 × 1 = 90/20 - Subtract the two like fractions:
400/20 - 90/20 = 400 - 90/20 = 310/20 - After reducing the fraction, the answer is 31/2
- In mixed form: 151/2
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