Question 1182069
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x + (4x+3) = 13

    5x     = 13-3

    5x     = 10

     x     = 10/5 = 2.


<U>ANSWER</U>.  2 years and 2*4+3 = 11 years.


<U>CHECK</U>.  2 + 11 = 13 years total.   ! Correct !
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Solved.