2x+7=4 -4x-3y=14 Express your answer as a ordered pair in format (a,b)

Question

Dolve the following system of equations. Express your answer as an ordered pair in the format (a,b), with no spaces between the numbers or symbol. 2x+7y=4 -4x-3y=14

Answer 1

2x + 7y = 4

-4x - 3y = 14

 

Well, looking at it, to me it would be easiest to multiply the top by 2 to get 4x, since 4x - 4x = 0.

 

4x + 14y = 8

-4x - 3y = 14

 

Now, if we add the two equations...

 

11y = 22

y = 2

 

Plug that into either equation.

 

2x + 7(2) = 4

2x + 14 = 4

2x = -10

x = -5

 

(-5,2)