If you wanted to eliminate the y variable by adding the two equations in the following system, what could be your first step?

2x − 4y = 6
3x − y = 12

Add the two equations together

Multiply the first equation by −4

Multiply the second equation by −4

Multiply the second equation by 4

Question

If you wanted to eliminate the y variable by adding the two equations in the following system, what could be your first step?

2x − 4y = 6
3x − y = 12 

 Add the two equations together 

 Multiply the first equation by −4 

 Multiply the second equation by −4 

 Multiply the second equation by 4

anonymous · Answer

You need to get either the coefficients of the x's or y's the same