Solve for both systems 4y+13z=95 and 4y + 7z = 77

4y + 7z = 77

4y + 7z-7z = 77-7z

4y= 77-7z

4y/4= 77-7z/4

y=19.25-1.74z

4y+13z=95

4(19.25-1.74z)+13z=95

4(19.25) (4)(-1.74z)+13z=95

77-6.93z+13z=95

77+6.0z=95

77-77+6.0z=95-77

6.0z=18

6.0z/6=18/6

z=3

y=19.25-1.74z

y=19.25-1.74(3)

y=19.25-5.22=14.04