Question 1132806
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An equation is


    35 = 2.5*(5 + M).


where M is unknown Matt's age.


To get the solution, first divide both sides of this equation by 2.5:


    {{{35/2.5}}} = 5 + M,   or

    14 = 5 + M.


Next move "5" from the right side to the left, changing the sign.


Thus you get the solution M = 14 - 5 = 9.


<U>ANSWER</U>.  Matt is 9 years old.
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