Question 886140
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)