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-3(3+x)=4
We move all terms to the left:
-3(3+x)-(4)=0
We add all the numbers together, and all the variables
-3(x+3)-4=0
We multiply parentheses
-3x-9-4=0
We add all the numbers together, and all the variables
-3x-13=0
We move all terms containing x to the left, all other terms to the right
-3x=13
x=13/-3
x=-4+1/3
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