Subtract 1/90 from 28/18
1st number: 1 10/18, 2nd number: 1/90
28/18 - 1/90 is 139/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
28/18 = 28 × 5/18 × 5 = 140/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
1/90 = 1 × 1/90 × 1 = 1/90 - Subtract the two like fractions:
140/90 - 1/90 = 140 - 1/90 = 139/90 - In mixed form: 149/90
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