The sum of number multiplied by three and five.

but I think this is the intended interpretation.  

Let x be the number.  

Then the sum of the number and 3 multiplied by 5 is:  5(x + 3).    (Last time, I would have listed this as x + 5 x 3).

9 times the number decreased by 13 is: 9x - 13.  

Since they are equal, we have  

                                                 5(x+ 3) = 9x - 13.  

                                                 5x + 15 = 9x - 13  

                                                -4x + 15 = -13

                                                -4x = -28  

                                                   x = 7

Step-by-step explanation:

make sure you have version 2.50

try looking in the very back of the book : )

step-by-step explanation:

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step-by-step explanation:

you have to round up to 4 because 6 is over 5 so you have to round the 3 up to 4