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4/9 + 7/12 first needs to have a common denominator (lower number). Let's find the LCM.
- 9 x 1 = 9
- 12 x 1 = 12
- 9 x 2 = 18
- 12 x 2 = 24
- 9 x 3 = 27
- 12 x 3 = 36
- 9 x 4 = 36
So our Lowest Common Multiple is 36.
4/9 (4/4) + 7/12 (3/3) =
16/36 + 21/36 =
37/36 = 1 1/36
So 4/9 + 7/12 = 1 and 1/36
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