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-x-16=2x+5
We move all terms to the left:
-x-16-(2x+5)=0
We add all the numbers together, and all the variables
-1x-(2x+5)-16=0
We get rid of parentheses
-1x-2x-5-16=0
We add all the numbers together, and all the variables
-3x-21=0
We move all terms containing x to the left, all other terms to the right
-3x=21
x=21/-3
x=-7
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