Subtract 5/90 from 20/4
1st number: 5 0/4, 2nd number: 5/90
20/4 - 5/90 is 89/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
20/4 = 20 × 45/4 × 45 = 900/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
5/90 = 5 × 2/90 × 2 = 10/180 - Subtract the two like fractions:
900/180 - 10/180 = 900 - 10/180 = 890/180 - After reducing the fraction, the answer is 89/18
- In mixed form: 417/18
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