Add 81/18 and 70/80
1st number: 4 9/18, 2nd number: 70/80
81/18 + 70/80 is 43/8.
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,
81/18 = 81 × 40/18 × 40 = 3240/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
70/80 = 70 × 9/80 × 9 = 630/720 - Add the two like fractions:
3240/720 + 630/720 = 3240 + 630/720 = 3870/720 - 3870/720 simplified gives 43/8
- So, 81/18 + 70/80 = 43/8
In mixed form: 53/8
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