Question

Solve x + 3y = 9
3x – 3y = -13 (1 point)

Answer 1

The values of x and y to the given equations are x=-1 and
`y=(10)/(3)`

The solution is (-1,
`(10)/(3)`)

Explanation:

Given equations are
`x+3y=9\hfill (1)`

and
`3x-3y=-13\hfill (2)`

to solve the given equations by elimination method :

Adding the given two equations (1) and (2) we get

`x+3y=9`

`3x-3y=-13`

_______________

4x=-4

`x=-(4)/(4)`

Therefore x=-1

Now substitute the value x=-1 in equation(1) we get

(-1)+3y=9

3y=9+1

`y=(10)/(3)`

Therefore the values of x and y to the given equations are x=-1 and
`y=(10)/(3)`

The solution is (-1,
`(10)/(3)`)