SOLUTION: Can you please help me solve this equation: {{{-3(x+y)+7(2x+1)}}} I tried to work it out on my own and this is what I worked out: -3x-3y+14x+7 -3y+11x+7 That's all I go

Algebra ->  Equations -> SOLUTION: Can you please help me solve this equation: {{{-3(x+y)+7(2x+1)}}} I tried to work it out on my own and this is what I worked out: -3x-3y+14x+7 -3y+11x+7 That's all I go      Log On


   

Question 217457: Can you please help me solve this equation: -3%28x%2By%29%2B7%282x%2B1%29
I tried to work it out on my own and this is what I worked out:
-3x-3y+14x+7
-3y+11x+7
That's all I got so far. If you could help me I would greatly appreciate it! Thank you very much!
Morgan
Answer by drj(1380) About Me  (Show Source):
You can put this solution on YOUR website!
Can you please help me solve this equation: -3%28x%2By%29%2B7%282x%2B1%29

I tried to work it out on my own and this is what I worked out:

-3x-3y+14x+7
-3y+11x+7

That's all I got so far. If you could help me I would greatly appreciate it! Thank you very much! Morgan

Hi Morgan,

My guess of the problem is that you want to solve for y as a function of x.

What you have so far is correct. So let's set the equation = 0 in order to get y.


-3y%2B11x%2B7+=0

Now add 3y to both sides to get y-terms on the right side.

-3y%2B11x%2B7%2B3y=3y

11x%2B7=3y

Now divide by 3 to both sides of the equation

11x%2F3%2B7%2F3=3y%2F3

11x%2F3%2B7%2F3=y ANSWER if the problem is to solve for y.

We now have y as a function of x which is a line.

I hope the above steps were helpful.

For FREE Step-By-Step videos in Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra and for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.

Good luck in your studies!

Respectfully,
Dr J