Question 1167892
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    {{{(2/7)x}}} + 36 + {{{(2/7)x}}} = 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.


<U>ANSWER</U>.  At first, she had  84  sweets.
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Solved.