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4=-(1+x)/2
We move all terms to the left:
4-(-(1+x)/2)=0
We add all the numbers together, and all the variables
-(-(x+1)/2)+4=0
We multiply all the terms by the denominator
-(-(x+1)+4*2)=0
We calculate terms in parentheses: -(-(x+1)+4*2), so:We get rid of parentheses
-(x+1)+4*2
We add all the numbers together, and all the variables
-(x+1)+8
We get rid of parentheses
-x-1+8
We add all the numbers together, and all the variables
-1x+7
Back to the equation:
-(-1x+7)
1x-7=0
We add all the numbers together, and all the variables
x-7=0
We move all terms containing x to the left, all other terms to the right
x=7
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