(x+8)+(2x+4)=90

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Solution for (x+8)+(2x+4)=90 equation: 



(x+8)+(2x+4)=90

We move all terms to the left:

(x+8)+(2x+4)-(90)=0

We get rid of parentheses

x+2x+8+4-90=0

We add all the numbers together, and all the variables

3x-78=0

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

3x=78

x=78/3

x=26

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