How do i substitute this equation for y (y=2x) in the equation for z (z=x+y)?

Printable View

- May 10th 2005, 05:03 AMahsas23algebra
How do i substitute this equation for y (y=2x) in the equation for z (z=x+y)?

- May 10th 2005, 07:51 AMMath Help
you substitute y with 2x

so for z = x + y

z = x +**2x**

or z = 3x