Question 1201953
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Equation for x is

    3(x+1) + 1 = 13.


From this equation, find x

    3(x+1) = 13-1 = 12

    x + 1 = 12/3 = 4

    x = 4-1 = 3.


<U>ANSWER</U>.  x = 3.
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Solved.