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45=2x+3x+813
We move all terms to the left:
45-(2x+3x+813)=0
We add all the numbers together, and all the variables
-(5x+813)+45=0
We get rid of parentheses
-5x-813+45=0
We add all the numbers together, and all the variables
-5x-768=0
We move all terms containing x to the left, all other terms to the right
-5x=768
x=768/-5
x=-153+3/5
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