8x+9x=81

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Solution for 8x+9x=81 equation: 



8x+9x=81

We move all terms to the left:

8x+9x-(81)=0

We add all the numbers together, and all the variables

17x-81=0

We move all terms containing x to the left, all other terms to the right

17x=81

x=81/17

x=4+13/17

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