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

Asked by
AnneS2
Last updated by
anonymous
- 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