Question

Use the substitution method to solve the system of equations.

4x – y = 4
x + 4y = 18

Answer 1

Get one of the variables in one of the equations by itself.

4x - y = 4
-y = 4 - 4x
y = 4x - 4

Now substitute (4x - 4) into the second equation for y, and solve for x.

x + 4(4x - 4) = 18
x + 16x - 16 = 18
17x = 34
x = 2

Now substitute 2 for x in one of the equations and solve for y.

2 + 4y = 18
4y = 16
y = 4

Final answer:

x = 2
y = 4

You are welcome. :)

Answer 2

thanks man

Answer 3

No problem (And I'm a girl) lol :)

Answer 4

:P
sorry

Answer 5

Haha, it's okay.