Question 97158
     


          7k - 8 + 2(k + 12) = 52

          7k - 8 + 2k + 24 = 52

           7k + 2k +24 - 8 = 52

           9k + 16 = 52

           9k = 52 - 16 

           9k = 36

            k = 36/9

            k = 4


    check :

   7*4 - 8 + 2( 4 + 12)

  = 28 - 8 + 2 * 16

  = 20 + 32 

   = 52