Answer:
17=2x+3x+7
We move all terms to the left:
17-(2x+3x+7)=0
We add all the numbers together, and all the variables
-(5x+7)+17=0
We get rid of parentheses
-5x-7+17=0
We add all the numbers together, and all the variables
-5x+10=0
We move all terms containing x to the left, all other terms to the right
-5x=-10
x=-10/-5
x=2