-3 + 7 (-2 + 2n) = 35 + n

Question

i need help on this multi step equation for 8th grade, thanks.

Answer 1

-3+7(-2+2n) =35+n

=-3 -14+14n=35+n

 

= -17 +14n=35 +n

   +17 -n      +17 -n

_______________________

        13n     =52            

        __         ___

         13         13                 

 

         n=4                                                           

__________________________________________

 

                      Check:                                       

 

      -3 + 7(-2 + 2(4))   =35 +4

    -3   -14  +56   =39         

        -17    + 56   = 39

             39          =39

 

Hope this helps!