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-5x+2=-40+2x
We move all terms to the left:
-5x+2-(-40+2x)=0
We add all the numbers together, and all the variables
-5x-(2x-40)+2=0
We get rid of parentheses
-5x-2x+40+2=0
We add all the numbers together, and all the variables
-7x+42=0
We move all terms containing x to the left, all other terms to the right
-7x=-42
x=-42/-7
x=+6
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