Add 27/18 and 90/45
1st number: 1 9/18, 2nd number: 2 0/45
27/18 + 90/45 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
27/18 = 27 × 5/18 × 5 = 135/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
90/45 = 90 × 2/45 × 2 = 180/90 - Add the two like fractions:
135/90 + 180/90 = 135 + 180/90 = 315/90 - 315/90 simplified gives 7/2
- So, 27/18 + 90/45 = 7/2
In mixed form: 31/2
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