+ 36 +  = x


Multiply all the terms by 7


    2x + 36*7 + 2x = 7x

    36*7           = 7x - 2x - 2x

    36*7           = 3x

    12*7           = x

       x           = 84.


ANSWER.  At first, she had  84  sweets.

With the original number of sweets being S, and after eating , she will have  of sweets, remaining

We then get: 

3S = 7(36) ------ Cross-multiplying

Original number of sweets, or  

Answer by greenestamps(13200)   (Show Source): You can put this solution on YOUR website!
 


She ate 2/7 of the sweets and still had 2/7 of them left after she gave some to her brother.


That means the 36 sweets she gave her brother were 3/7 of the number she started with.  (2/7 plus 2/7 plus 3/7 = 7/7 = all of them)


(3/7)x = 36

x = 36(7/3) = 12*7 = 84


 

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