Subtract 90/50 from 42/20
1st number: 2 2/20, 2nd number: 1 40/50
42/20 - 90/50 is 3/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 50 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
42/20 = 42 × 5/20 × 5 = 210/100 - Likewise, for the 2nd fraction, since 50 × 2 = 100,
90/50 = 90 × 2/50 × 2 = 180/100 - Subtract the two like fractions:
210/100 - 180/100 = 210 - 180/100 = 30/100 - After reducing the fraction, the answer is 3/10
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