SOLUTION: 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

Algebra ->  Customizable Word Problem Solvers  -> Coins -> SOLUTION: 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      Log On

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Question 443751: 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 by rwm(914) About Me  (Show Source):
You can put this solution on YOUR website!

14x +18y= -54
-4x -14y= 42
divide them both by 2
7x+9y=-27
-4x-7y= 21
multiply the first by 4 and the second by 7
28x+36y=-108
-28x-49y=147
add then
-13y=39
y=-3
plug 3 in for y in any equation and solve for x
-4x-7y=21
-4x+21=21
-4x=0
x=0