equations that get an answer of 3

Question

(7a+15)

 

Answer 1

                  Hi Chris if I read your problem right...

 

        Y= (7a +15)  =3 

                   -15       -15

              ________________

 

         Y=  7a    = -12

               __       ____

                7          7

 

                a=   -12

                       ___

                         7                                                          

 _________________________________________________

 

     Y= 7(-12)    +15  =3

            ____                                                                

              7                                                               

 

    Y=  (-12)   +15    =3   (The 7's cancel) 

 

     Y=3                     =3         Checks...

 

      Hope this helps...