Question 884531: solve each system by the addition method.
5x+4y=12
7x-6y=40
put your answer in ordered pair (x,y) form Answer by skartikey(21) (Show Source):
You can put this solution on YOUR website! (5x+4y=12)3=>15x+12y=36
(7x-6y=40)2=>14x-12y=80
by adding two equations, we get
29x=116
=>x=4
and
5(4)+4y=12
=>4y=12-20
=>4y=-8
=>y=-2
(x,y)=(4,-2)
