problem on elimination methos

Topic:- Elimination method

When we are solving equations in algebra ,We can add or subtract the equations ,So that
We can simplify the equations , This is called elimination method

Here we have a simple example to show you ,how this methos works.

This algebra help shows ,how to solve equations as well.

Question :

x+y = 7 and x-y = 9

Solve for 'x',By using elimination method.

Answer:-

Let's add both the equations

      x + y = 7
      x - y = 9
 ------------------
        2x = 16


Divide with 2 on both sides


       2x     16
      ---- = -----
       2       2


        x = 8


So 8 is the answer


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