Subtract 90/5 from 30/20
1st number: 1 10/20, 2nd number: 18 0/5
30/20 - 90/5 is -33/2.
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,
30/20 = 30 × 1/20 × 1 = 30/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
90/5 = 90 × 4/5 × 4 = 360/20 - Subtract the two like fractions:
30/20 - 360/20 = 30 - 360/20 = -330/20 - After reducing the fraction, the answer is -33/2
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