Subtract 15/50 from 90/20
1st number: 4 10/20, 2nd number: 15/50
90/20 - 15/50 is 21/5.
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,
90/20 = 90 × 5/20 × 5 = 450/100 - Likewise, for the 2nd fraction, since 50 × 2 = 100,
15/50 = 15 × 2/50 × 2 = 30/100 - Subtract the two like fractions:
450/100 - 30/100 = 450 - 30/100 = 420/100 - After reducing the fraction, the answer is 21/5
- In mixed form: 41/5
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