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-2x-25=40+3x
We move all terms to the left:
-2x-25-(40+3x)=0
We add all the numbers together, and all the variables
-2x-(3x+40)-25=0
We get rid of parentheses
-2x-3x-40-25=0
We add all the numbers together, and all the variables
-5x-65=0
We move all terms containing x to the left, all other terms to the right
-5x=65
x=65/-5
x=-13
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