SOLUTION: -4r-11=4r+21 solve and check solution

Algebra ->  Functions -> SOLUTION: -4r-11=4r+21 solve and check solution      Log On


   

Question 530868: -4r-11=4r+21 solve and check solution
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
-4r-11=4r%2B21 Start with the given equation.


-4r=4r%2B21%2B11 Add 11 to both sides.


-4r-4r=21%2B11 Subtract 4r from both sides.


-8r=21%2B11 Combine like terms on the left side.


-8r=32 Combine like terms on the right side.


r=%2832%29%2F%28-8%29 Divide both sides by -8 to isolate r.


r=-4 Reduce.


----------------------------------------------------------------------

Answer:

So the solution is r=-4


If you need more help, email me at jim_thompson5910@hotmail.com

Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you

Jim