What is the best possible first step to solving the following system by first eliminating the y variable?

x + y = 2
−2x + 3y = 9

Question

What is the best possible first step to solving the following system by first eliminating the y variable?

    x + y = 2
−2x + 3y = 9

anonymous · Answer

a. Multiply the second equation by −2 	
	b. Multiply the first equation by 2 	
	c. Multiply the second equation by 3 	
	d. Multiply the first equation by −3

anonymous · Answer

I feel like I'm taking the quiz with you ;)

In order to eliminate the y value we have to make them opposite signs with the same value
you would multiply the first equation by -3
$$-3(x+y)=(2)(-3) \rightarrow -3x-3y=-6$$ which will allow you to isolate the x value

anonymous · Answer

Haha XD sorry! Math is not my strong suit and I'm trying to figure it out lol :P

anonymous · Answer

Thanks though :D