Solve for both equations: x + 3y = 17 and - x - 2y = - 10

Asked by AnneS2 on 11 Oct 07:47

Last updated by anonymous on 12 Oct 11:55

Answered by CherieS on 12 Oct 11:55

x + 3y = 17

x + 3y-3y = 17-3y

x= 17-3y

- x - 2y = - 10

- (17-3y) - 2y = - 10

- (17) (-1)(-3y) - 2y = - 10

-17+3y - 2y = - 10

-17+y= - 10

-17+y+17= - 10+17

y=7

x= 17-3y

x= 17-3(7)

x= 17-21=-4