SOLUTION: Solve by substitution. 3x-5y=4 y=4-2x

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: Solve by substitution. 3x-5y=4 y=4-2x       Log On


   

Question 747337: Solve by substitution.
3x-5y=4
y=4-2x
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
3x-5y=4

3x-5(4-2x)=4 ... plug in y = 4 - 2x

3x-20+10x=4

13x-20=4

I'll let you finish. You need to solve for x. Once you find x, use it and plug it into y = 4 - 2x to find y.