Solve for both systems: 8z+5y=59 and -y + 5z = 8

-y + 5z = 8

-y+y + 5z = 8+y

5z = 8+y

5z-8 = 8-8+y

5z-8 =y

8z+5y=59

8z+5(5z-8 )=59

8z+5(5z) (5)(-8 )=59

8z+25z-40=59

33z-40=59

33z-40+40=59+40

33z=99

33z/33=99/33

z=3

5z-8 =y

5(3)-8 =y

15-8 =y

7=y