Subtract 15/90 from 50/20
1st number: 2 10/20, 2nd number: 15/90
50/20 - 15/90 is 7/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
50/20 = 50 × 9/20 × 9 = 450/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
15/90 = 15 × 2/90 × 2 = 30/180 - Subtract the two like fractions:
450/180 - 30/180 = 450 - 30/180 = 420/180 - After reducing the fraction, the answer is 7/3
- In mixed form: 21/3
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