(3x+15)+(12x+90)=180

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Solution for (3x+15)+(12x+90)=180 equation: 



(3x+15)+(12x+90)=180

We move all terms to the left:

(3x+15)+(12x+90)-(180)=0

We get rid of parentheses

3x+12x+15+90-180=0

We add all the numbers together, and all the variables

15x-75=0

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

15x=75

x=75/15

x=5

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