Add 84/90 and 30/81
84/90 + 30/81 is 176/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 90 × 9 = 810,
84/90 = 84 × 9/90 × 9 = 756/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
30/81 = 30 × 10/81 × 10 = 300/810 - Add the two like fractions:
756/810 + 300/810 = 756 + 300/810 = 1056/810 - 1056/810 simplified gives 176/135
- So, 84/90 + 30/81 = 176/135
In mixed form: 141/135
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