Add 5/81 and 90/80
1st number: 5/81, 2nd number: 1 10/80
5/81 + 90/80 is 769/648.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 80 is 6480
Next, find the equivalent fraction of both fractional numbers with denominator 6480 - For the 1st fraction, since 81 × 80 = 6480,
5/81 = 5 × 80/81 × 80 = 400/6480 - Likewise, for the 2nd fraction, since 80 × 81 = 6480,
90/80 = 90 × 81/80 × 81 = 7290/6480 - Add the two like fractions:
400/6480 + 7290/6480 = 400 + 7290/6480 = 7690/6480 - 7690/6480 simplified gives 769/648
- So, 5/81 + 90/80 = 769/648
In mixed form: 1121/648
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