Solve for both systems 2y + x = 5 and 8y+2x=10

2y + x = 5

2y-2y + x = 5-2y

x = 5-2y

8y+2x=10

8(5-2y)+2x=10

8(5) (8)(-2y)+2x=10

40-16y+2x=10

40-14y=10

40-14y-40=10-40

-14y=-30

-14y/-14=-30/-14

y=2.14

x = 5-2y

x = 5-2(2.14)

x = 5-4.28=.72