SOLUTION: in substitution how do you solve for a equation for x. then solve it for y? example 3x-5y=12

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Question 4163: in substitution how do you solve for a equation for x. then solve it for y?
example 3x-5y=12
Found 2 solutions by Earlsdon, kekegeter :
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
You are missing something here!
Solving an equation with two unknowns (x and y) requires another equation with the same two variables. This is called a system of equations (also known as simultaneous equations). Please re-post with both equations.

Answer by kekegeter (97) About Me  (Show Source):
You can put this solution on YOUR website!
For x
3x-5y=12
3x=5y+12
x=5y+12/3
For y
3x-5y=12
-5y= -3x+12
y= -3(-x+4)/5