Subtract 3/90 from 18/15
1st number: 1 3/15, 2nd number: 3/90
18/15 - 3/90 is 7/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
18/15 = 18 × 6/15 × 6 = 108/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
3/90 = 3 × 1/90 × 1 = 3/90 - Subtract the two like fractions:
108/90 - 3/90 = 108 - 3/90 = 105/90 - After reducing the fraction, the answer is 7/6
- In mixed form: 11/6
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