Subtract 81/90 from 80/4
1st number: 20 0/4, 2nd number: 81/90
80/4 - 81/90 is 191/10.
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,
80/4 = 80 × 45/4 × 45 = 3600/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
81/90 = 81 × 2/90 × 2 = 162/180 - Subtract the two like fractions:
3600/180 - 162/180 = 3600 - 162/180 = 3438/180 - After reducing the fraction, the answer is 191/10
- In mixed form: 191/10
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