(1+6x)+(9+2x)=90

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Solution for (1+6x)+(9+2x)=90 equation: 



(1+6x)+(9+2x)=90

We move all terms to the left:

(1+6x)+(9+2x)-(90)=0

We add all the numbers together, and all the variables

(6x+1)+(2x+9)-90=0

We get rid of parentheses

6x+2x+1+9-90=0

We add all the numbers together, and all the variables

8x-80=0

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

8x=80

x=80/8

x=10

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