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4-2x+3=-9-x
We move all terms to the left:
4-2x+3-(-9-x)=0
We add all the numbers together, and all the variables
-2x-(-1x-9)+4+3=0
We add all the numbers together, and all the variables
-2x-(-1x-9)+7=0
We get rid of parentheses
-2x+1x+9+7=0
We add all the numbers together, and all the variables
-1x+16=0
We move all terms containing x to the left, all other terms to the right
-x=-16
x=-16/-1
x=+16
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