bantu donk bagaimana carax no 14,15 n 16

14. x²+x-6 / x²-4 = (x+3)(x-2) / (x+2)(x-2) = (x+3) / (x+2) ..............(A)
16. 2/3 (x-4) = 4 + 1/2 x
      2/3 x - 8/3 = 4 +1/2 x
      2/3 x -1/2 x = 4 + 8/3
      2*2/3*2 x - 1*3/2*3 x = 4 8/3
       4/6 x - 3/6 x = 20/3
       1/6 x = 20/3
             x = 20/3 : 1/6
             x = 20/3 x 6/1
             x = 40 ...................(B)