Solve for both systems: z+4x=8 and 5z + x = 2

z+4x=8

z+4x-4x=8 -4x

z=8 -4x

5z + x = 2

5(8 -4x) + x = 2

5(8) (5)( -4x) + x = 2

40-20x+x=2

40-19x=2

40-19x-40=2-40

-19x=-38

-19x/-19=-38/-19

x=2

z=8 -4x

z=8 -4(2)

z=8 -8=0