Subtract 81/90 from 40/12
1st number: 3 4/12, 2nd number: 81/90
40/12 - 81/90 is 73/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
40/12 = 40 × 15/12 × 15 = 600/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
81/90 = 81 × 2/90 × 2 = 162/180 - Subtract the two like fractions:
600/180 - 162/180 = 600 - 162/180 = 438/180 - After reducing the fraction, the answer is 73/30
- In mixed form: 213/30
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