Question

Solve the system of linear equations by substitution.
3x + y = -3 -2x + y =7

Answer 1

both equations are equal to 0

Answer 2

(-2, 3)

Explanation:

First solve one equation for y:

`-2x+y=7\\y=7+2x`

Now we can substitute this equation into the other one:

`3x+7+2x=-3`

Solve for x:

`x=-2`

Now substitute this value into the equation
`y=7+2x`:

`y=7+2x(-2)`

Solve for y:

`7=3`

Now your solution is (-2,3)

Hope this helps! :)