(9+2x)+(4x+3)=90

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Solution for (9+2x)+(4x+3)=90 equation: 



(9+2x)+(4x+3)=90

We move all terms to the left:

(9+2x)+(4x+3)-(90)=0

We add all the numbers together, and all the variables

(2x+9)+(4x+3)-90=0

We get rid of parentheses

2x+4x+9+3-90=0

We add all the numbers together, and all the variables

6x-78=0

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

6x=78

x=78/6

x=13

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