Question

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the first equation is substituted into the second equation.
x + 2y = 4
x – 5y = 11

Answer 1

x + 2y = 4

This is the first equation. You are asked to solve for x. This simply means that we want x by itself on one side. Let's keep it on the left side. Now what we want to do is get rid of that 2y

Answer 2

To do that you subtract 2y to both sides and that is you answer.

Answer 3

Do you understand?

Answer 4

x=4?

Answer 5

Remember that for one thing we do on one side we have to do the same exact thing on to the other side.

x + 2y -2y = 4 -2y

You only have to simplify that.

Answer 6

Uhhh x – 5(2y + 4) = 11

x – 5(–2y + 4) = 11

(2y + 4) – 5y = 11

(–2y + 4) – 5y = 11

Answer 7

Id be C?

Answer 8

yeah good job

Answer 9

:D