Solve for both systems 10x+8z=116 and 4x - z = 17

4x - z = 17

4x - z+z = 17+z

4x= 17+z

4x-17= 17-17+z

4x-17=z

10x+8z=116

10x+8(4x-17)=116

10x+8(4x) (8)(-17)=116

10x+32x-136=116

42x-136=116

42x-136+136=116+136

4x=252

4x/4=252/4

x=63

4x-17=z

4(63)-17=z

252-17=z

235=z