What is the solution of the following system?
{3x + 3y = 10
{ -9x - 9y = -30

Question

What is the solution of the following system?
{3x + 3y = 10
{ -9x - 9y = -30

anonymous · Answer

try it

anonymous · Answer

I need help with this problem, that's why I'm asking here..

baldymcgee6 · Answer

Do you know any of the methods used to solve systems of equations? Or have heard of any?

anonymous · Answer

do you know how to eliminate or substitute a variable

anonymous · Answer

We just started learning this and I am having a hard time understanding how to solve them.

baldymcgee6 · Answer

What method do you want to use? Substitution or elimination?

anonymous · Answer

We use both as far as I can see right now, but it does not specify which method with this problem.

anonymous · Answer

ok i will show you how to do it using elimination

anonymous · Answer

{3x + 3y = 10
{ -9x - 9y = -30 
to get 3x = 9x what should we multiply 3x by

anonymous · Answer

3y?

anonymous · Answer

no
3*what=9?

anonymous · Answer

Oh, sorry I misunderstood. 3.

anonymous · Answer

ok multiply the 1st equation by 3 what do you get

anonymous · Answer

18, I think.

anonymous · Answer

no just multiply each term by 3
then write the whole equation

anonymous · Answer

Never mind. I'm just going to contact my teacher again. Thanks for the help.