Solve for 3x - 5y = 16 and - 3x + 4y = - 17

Asked by AnneS2 on 14 Jul 08:44

Last updated by anonymous on 15 Jul 16:14

Answered by CherieS on 15 Jul 16:14

3x - 5y = 16

3x - 5y +5y= 16+5y

3x= 16+5y

3x/3= 16+5y/3

x=5.33+1.67y

- 3x + 4y = - 17

- 3(5.33+1.67y) + 4y = - 17

- 3(5.33) (-3)(+1.67y) + 4y = - 17

16-5y+ 4y = - 17

16-y = - 17

16-y-16 = - 17-16

-y=-33

-y/-1=-33/-1

y=33

x=5.33+1.67y

x=5.33+1.67(33)

x=5.33+55.11=60.44