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

x - y = 6
4x - 3y = 12

Question

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

x - y = 6
4x - 3y = 12

anonymous · Answer

You would do the opposite of PEMDAS...SADMEP.
You're trying to isolate y, so what do you think you would do first? Maybe get rid of the x? How would you do that?

anonymous · Answer

Somehow you need to get the first x to become -4x...  some multiplication should do.

lgbasallote · Answer

i dont think @Calcmathlete and @Hyginkz read the WHOLE question ;) haha

anonymous · Answer

I must be getting tired...seriously...MUST REACH 90 TONIGHT! lol...
@isa123 you have to multiply the first equation by something so that when you add, the y cancels and it becomes 0.

anonymous · Answer

ok, +3y, same step though