# 12x-3x+84=12x+45

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## Solution for 12x-3x+84=12x+45 equation:

12x-3x+84=12x+45
We move all terms to the left:
12x-3x+84-(12x+45)=0
We add all the numbers together, and all the variables
9x-(12x+45)+84=0
We get rid of parentheses
9x-12x-45+84=0
We add all the numbers together, and all the variables
-3x+39=0
We move all terms containing x to the left, all other terms to the right
-3x=-39
x=-39/-3
x=+13

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