Add 72/18 and 20/80
1st number: 4 0/18, 2nd number: 20/80
72/18 + 20/80 is 17/4.
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,
72/18 = 72 × 40/18 × 40 = 2880/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
20/80 = 20 × 9/80 × 9 = 180/720 - Add the two like fractions:
2880/720 + 180/720 = 2880 + 180/720 = 3060/720 - 3060/720 simplified gives 17/4
- So, 72/18 + 20/80 = 17/4
In mixed form: 41/4
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