Subtract 20/18 from 90/12
1st number: 7 6/12, 2nd number: 1 2/18
90/12 - 20/18 is 115/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
90/12 = 90 × 3/12 × 3 = 270/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
20/18 = 20 × 2/18 × 2 = 40/36 - Subtract the two like fractions:
270/36 - 40/36 = 270 - 40/36 = 230/36 - After reducing the fraction, the answer is 115/18
- In mixed form: 67/18
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