Question

How do you solve the system of equations `4x - 3y = 9` and `2x + 3y = 9`?

Answer 1

`x=3` and `y=1` or `(3,1)`

Explanation:

Line them up and add them together.
`4x-3y=9`
`2x+3y=9`
`6x=18`
`x=3`
`12-3y=9`
`-3y=-3`
`y=1`