Subtract 9/90 from 18/12
1st number: 1 6/12, 2nd number: 9/90
18/12 - 9/90 is 7/5.
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,
18/12 = 18 × 15/12 × 15 = 270/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
9/90 = 9 × 2/90 × 2 = 18/180 - Subtract the two like fractions:
270/180 - 18/180 = 270 - 18/180 = 252/180 - After reducing the fraction, the answer is 7/5
- In mixed form: 12/5
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