Solve for both systems: 11z+4y=121 and 4z + y = 44

4z + y = 44

4z -4z+ y = 44-4z

y = 44-4z

11z+4y=121

11z+4(44-4z)=121

11z+4(44) (4)(-4z)=121

11z+176-16z=121

176-5z=121

176-5z-176=121-176

-5z=-55

-5z/-5=-55/-5

z=11

y = 44-4z

y = 44-4(11)

y = 44-44=0