Idenity/ no solution? Algebra1.

[joshua77]

How do you find if this problem is either idenity or no solution?
7+-2n=n+-14 ????

-Thanks, Joshua77.... :roll:

 

[stapel]

An equation that solves as something along the lines of "x = 3" has a unique solution. If it solves along the lines of "x = x" or "0 = 0", then the equation has infinitely-many solutions, since any value of x will work. And if it solves as "0 = 3" or some such other nonsense, then there is no solution, since no value of x can ever make the equation true.

So solve the equation, and look at what type of solution you get.

Eliz.

 

[joshua77]

Eliz/Staplz....

Whats the answer...I still don't get it...I have

7+-2n=n+-14 then...

7+-2n+2n=n+2n+-14

then i got 7=3n+-14 ....

is that right or not or if whatever, tell me how??

~Joshua77 :arrow:

 

[stapel]

Now add 14 to both sides, and then divide through by 3. What do you get?

Eliz.