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13-4x=-(1+x)
We move all terms to the left:
13-4x-(-(1+x))=0
We add all the numbers together, and all the variables
-4x-(-(x+1))+13=0
We calculate terms in parentheses: -(-(x+1)), so:We get rid of parentheses
-(x+1)
We get rid of parentheses
-x-1
We add all the numbers together, and all the variables
-1x-1
Back to the equation:
-(-1x-1)
-4x+1x+1+13=0
We add all the numbers together, and all the variables
-3x+14=0
We move all terms containing x to the left, all other terms to the right
-3x=-14
x=-14/-3
x=4+2/3
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