SOLUTION: please help me with this question! If x=2y and y=4z what is 3x+2y+8z in terms of x?

Algebra ->  Equations -> SOLUTION: please help me with this question! If x=2y and y=4z what is 3x+2y+8z in terms of x?       Log On


   

Question 886140: please help me with this question!
If x=2y and y=4z what is 3x+2y+8z in terms of x?
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
If x=2y and y=4z what is 3x+2y+8z in terms of x?
start with:
3x+2y+8z
rewrite the last term as:
3x+2y+2(4z)
since y=4z we have:
3x+2y+2y
since x=2y we have:
3x+x+x
5x (solution)