SOLUTION: solve the system 3y-4x=12 y-2x=4 how do I do this? help would be greatly appreciated thank you

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Question 790782: solve the system
3y-4x=12
y-2x=4
how do I do this?
help would be greatly appreciated
thank you
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
solve the system
3y-4x=12
y-2x=4
how do I do this?
================
There's more than 1 way.
Substitution is 1 method.
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y-2x=4
y = 2x + 4
Sub for y in the 1st eqn
---
3y - 4x = 12
3(2x+4) - 4x = 12
Solve for x.
6x + 12 - 4x = 12
2x = 0
x = 0
-----------------
Then solve for y.
-----------
y = 2x + 4
y = 4