x+3x+6x-20=180 x=10 how do I get 10 for x?

Question

anonymous · Answer

collect like terms on the left to get 
$$ 10x-20=180$$ then add 20 to both sides to get 
$$10x=200$$ so 
$$x=20$$ not 10

anonymous · Answer

in my math lab for class it gives me the answer x=10 but I can figure out how they came up with 10??  it takes me to the next step being 10x-20=180

anonymous · Answer

oh i see, you are not asking for x, just what is 
$$x+3x+6x$$ which is 
$$10x$$ for the same reason that a bottle of beer plus 3 bottles of beer plus 6 bottles of beer is ten bottles of beer

anonymous · Answer

OHH I got it now because x is alone in the equation it equals one so x+3+6=10 right?

anonymous · Answer

thanks

directrix · Answer

Think of the "alone" x as 1x.

Then, x+3x+6x-20=180
1x + 3x + 6x - 20 = 180

10x = 200