Add 90/81 and 12/80
1st number: 1 9/81, 2nd number: 12/80
90/81 + 12/80 is 227/180.
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,
90/81 = 90 × 80/81 × 80 = 7200/6480 - Likewise, for the 2nd fraction, since 80 × 81 = 6480,
12/80 = 12 × 81/80 × 81 = 972/6480 - Add the two like fractions:
7200/6480 + 972/6480 = 7200 + 972/6480 = 8172/6480 - 8172/6480 simplified gives 227/180
- So, 90/81 + 12/80 = 227/180
In mixed form: 147/180
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