Question

What is the value of x in the solution

y=x-1
y=2x+1

Answer 1

First, we replace y with the first equation, so it would look like this:

`x - 1 = 2x + 1`

Then we start simplifying:

`x-2x = 1+1`

At last we do:

`-x = 2` or
`x = -2`

So the answer is: -x = 2 or x = -2

Hope this helped! c:

Answer 2

Assuming that these equations depend on each other, We can use substitution to figure out what x is equal to. Since both equations have a certain value of x equal to y, we can substitute one of the equations into the other.

y = x - 1

Use substitution

x - 1 = 2x + 1

x = 2x + 2

-x = 2

x = -2