Add 27/18 and 90/80
1st number: 1 9/18, 2nd number: 1 10/80
27/18 + 90/80 is 21/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 18 × 40 = 720,
27/18 = 27 × 40/18 × 40 = 1080/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
90/80 = 90 × 9/80 × 9 = 810/720 - Add the two like fractions:
1080/720 + 810/720 = 1080 + 810/720 = 1890/720 - 1890/720 simplified gives 21/8
- So, 27/18 + 90/80 = 21/8
In mixed form: 25/8
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