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19-4=2x-1
We move all terms to the left:
19-4-(2x-1)=0
We add all the numbers together, and all the variables
-(2x-1)+15=0
We get rid of parentheses
-2x+1+15=0
We add all the numbers together, and all the variables
-2x+16=0
We move all terms containing x to the left, all other terms to the right
-2x=-16
x=-16/-2
x=+8
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