Question

Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
14x + 18y = -54
-4x – 14y = 42

Answer 1

JB, give it a try man!

Answer 2

I'm justin bieber

Answer 3

\[\{x=0,y=-3\} \]

Answer 4

Justin Bieber the great:
http://www.youtube.com/watch?v=zqZ42LmDou4

Answer 5

14x + 18y = -54 ----(I)
-4x – 14y = 42 ----(II)

multiply eqn(I) with 2 and eqn(II) with 7, we get

28x + 36y = -108
-28x – 98y = 294

add the above 2 eqns

we get -62y=186

so y=-3
put y=-3 in any one of the given eqns

-4x – 14y = 42
-4x – 14*(-3) = 42
-4x+42=42
-4x=0
x=0


so y=-3 and x=0