15x-3(x+20)=180

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Solution for 15x-3(x+20)=180 equation: 



15x-3(x+20)=180

We move all terms to the left:

15x-3(x+20)-(180)=0

We multiply parentheses

15x-3x-60-180=0

We add all the numbers together, and all the variables

12x-240=0

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

12x=240

x=240/12

x=20

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