Solve for both systems - 2x + 4y = 18 and - 2x + 5y = 25

- 2x + 4y = 18

- 2x + 4y -4y= 18-4y

-2x= 18-4y

-2x/-2= 18-4y/-2

x=-9+2y

2x + 5y = 25

2(-9+2y) + 5y = 25

2(-9) (2)(+2y) + 5y = 25

-18+4y+ 5y = 25

-18+9y = 25

-18+9y+18 = 25+18

9y=43

9y/9=43/9

y=4.78

x=-9+2y

x=-9+2(4.78)

x=-9+10=1