SOLUTION: 2+3(5x+7)=53 3n+2(n-4)= 42 3(x+2)= 15

Algebra ->  Equations -> SOLUTION: 2+3(5x+7)=53 3n+2(n-4)= 42 3(x+2)= 15      Log On


   

Question 156710: 2+3(5x+7)=53
3n+2(n-4)= 42
3(x+2)= 15
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
I'll do the first two to help you along

# 1



2%2B3%285x%2B7%29=53 Start with the given equation.


2%2B15x%2B21=53 Distribute.


15x%2B23=53 Combine like terms on the left side.


15x=53-23 Subtract 23 from both sides.


15x=30 Combine like terms on the right side.


x=%2830%29%2F%2815%29 Divide both sides by 15 to isolate x.


x=2 Reduce.


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

Answer:

So the answer is x=2





# 2



3n%2B2%28n-4%29=42 Start with the given equation.


3n%2B2n-8=42 Distribute.


5n-8=42 Combine like terms on the left side.


5n=42%2B8 Add 8 to both sides.


5n=50 Combine like terms on the right side.


n=%2850%29%2F%285%29 Divide both sides by 5 to isolate n.


n=10 Reduce.


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

Answer:

So the answer is n=10