Add 70/90 and 27/81
70/90 + 27/81 is 10/9.
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,
70/90 = 70 × 9/90 × 9 = 630/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
27/81 = 27 × 10/81 × 10 = 270/810 - Add the two like fractions:
630/810 + 270/810 = 630 + 270/810 = 900/810 - 900/810 simplified gives 10/9
- So, 70/90 + 27/81 = 10/9
In mixed form: 11/9
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