Solve for - 5x + 3y = - 17 and 5x + 3y = 23

5x + 3y = 23

5x + 3y -5x= 23-5x

3y= 23-5x

3y/3= 23-5x/3

y=7.67-1.67x

- 5x + 3y = - 17

- 5x + 3(7.67-1.67x) = - 17

- 5x + 3(7.67) (3)(-1.67x) = - 17

-5x+23-5x=-17

23-10x=-17

23-10x-23=-17-23

-10x=-40

-10x/-10=-40/-10

x=4

y=7.67-1.67x

y=7.67-1.67(4)

y=7.67-6.68=.99