# How do you solve #x= 3y-1# and #x+2y=9# using substitution?

##### 3 Answers

#### Explanation:

You know the value of the variable

Remove the parentheses and solve.

Plug

#### Explanation:

Given

Substitute

Substitute y=2 into the first equation,

#### Explanation:

If

then use that equation in the second equation. This means that

Having said this, just replace the

After that, just check that the values make sense:

And for the second one:

Both answers satisfy both equations, which makes them correct.