Solve for both systems y+7z=52 and 2y + z = 16

y+7z=52

y+7z-7z=52-7z

y=52-7z

2y + z = 16

2(52-7z) + z = 16

2(52) (2)(-7z) + z = 16

104-14z+ z = 16

104-13z = 16

104-13z-104 = 16-104

-13z=-88

-13z/-13=-88/-13

z=6.77

y=52-7z

y=52-7(6.77)

y=52-47.38=4.62