Add 36/81 and 30/90
36/81 + 30/90 is 7/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 90 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 81 × 10 = 810,
36/81 = 36 × 10/81 × 10 = 360/810 - Likewise, for the 2nd fraction, since 90 × 9 = 810,
30/90 = 30 × 9/90 × 9 = 270/810 - Add the two like fractions:
360/810 + 270/810 = 360 + 270/810 = 630/810 - 630/810 simplified gives 7/9
- So, 36/81 + 30/90 = 7/9
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