Question

6x + 3y = 9
2x + 3y = 1
Solve this system of equations! How do you do this?! :O

Answer 1

Elimination ;).You can subtract both equations and then solve for \(x\).

Answer 2

So you subtract the 6 from the 2 and the 3 from the 3? Or not... :S

Answer 3

\( \color{Black}{\Rightarrow 4x = 8 }\)
When you solve for \(x\), then substitute its value into any equation and solve for \(y\)

Answer 4

so x=2?

Answer 5

Yep. Now you solve for \(y\) like this.

\( \color{Black}{\Rightarrow 6(2)+3y = 9 }\)
\( \color{Black}{\Rightarrow 12 + 3y = 9 }\)
\( \color{Black}{\Rightarrow 3y = -3 }\)
\( \color{Black}{\Rightarrow y = -1 }\)

Answer 6

so you just substitute? Thats alll. Wow. Why didnt my teacher make that easy for me like you .____.

Answer 7

lol

Answer 8

that ismessed up! :O