(10x+9)+9x=180

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Solution for (10x+9)+9x=180 equation: 



(10x+9)+9x=180

We move all terms to the left:

(10x+9)+9x-(180)=0

We add all the numbers together, and all the variables

9x+(10x+9)-180=0

We get rid of parentheses

9x+10x+9-180=0

We add all the numbers together, and all the variables

19x-171=0

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

19x=171

x=171/19

x=9

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