Add 18/72 and 90/80
1st number: 18/72, 2nd number: 1 10/80
18/72 + 90/80 is 11/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 72 × 10 = 720,
18/72 = 18 × 10/72 × 10 = 180/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
90/80 = 90 × 9/80 × 9 = 810/720 - Add the two like fractions:
180/720 + 810/720 = 180 + 810/720 = 990/720 - 990/720 simplified gives 11/8
- So, 18/72 + 90/80 = 11/8
In mixed form: 13/8
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