system of equation

Question

What is a possible first step in eliminating a variable in the following system of equations?

5x + 2y = 2
8x - y = -22         Choose one answer.

A. Multiply the first equation by 2.
 

B. Multiply the second equation by 2.
 

C. Multiply the first equation by -2.
 

D. Multiply the second equation by -2.

Answer 1

May, I would start with the easiest variable to eliminate, i.e, y would be the easiest in this case. I'll give you a hint. The hint is you want to multiply the second equation by_____  as your first step. In the next step, is to add the two equations in which the y variable would be eliminated.

 

 

 

Hope this helps.