SOLUTION: Solve 7n = 9(n+4)

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: Solve 7n = 9(n+4)      Log On


   

Question 703324: Solve 7n = 9(n+4)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
7n=9%28n%2B4%29 Start with the given equation.


7n=9n%2B36 Distribute.


7n-9n=36 Subtract 9n from both sides.


-2n=36 Combine like terms on the left side.


n=%2836%29%2F%28-2%29 Divide both sides by -2 to isolate n.


n=-18 Reduce.


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

Answer:

So the solution is n=-18