Solve for u+6y=32 and u+3y = 17

u+3y = 17

u+3y-3y = 17-3y

u= 17-3y

u+6y=32

17-3y+6y=32

17+3y=32

17+3y-17=32-17

3y=15

3y/3=15/3

y=5

u= 17-3y

u= 17-3(5)

u= 17-15=2