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45=-4+4x
We move all terms to the left:
45-(-4+4x)=0
We add all the numbers together, and all the variables
-(4x-4)+45=0
We get rid of parentheses
-4x+4+45=0
We add all the numbers together, and all the variables
-4x+49=0
We move all terms containing x to the left, all other terms to the right
-4x=-49
x=-49/-4
x=12+1/4
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