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x-4+x=-4+2x
We move all terms to the left:
x-4+x-(-4+2x)=0
We add all the numbers together, and all the variables
x+x-(2x-4)-4=0
We add all the numbers together, and all the variables
2x-(2x-4)-4=0
We get rid of parentheses
2x-2x+4-4=0
We add all the numbers together, and all the variables
=0
x=0/1
x=0
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