(3x+84)+x=90

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Solution for (3x+84)+x=90 equation: 



(3x+84)+x=90

We move all terms to the left:

(3x+84)+x-(90)=0

We add all the numbers together, and all the variables

x+(3x+84)-90=0

We get rid of parentheses

x+3x+84-90=0

We add all the numbers together, and all the variables

4x-6=0

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

4x=6

x=6/4

x=1+1/2

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