Question

ACTIVIDADES
a) x – 3 = 3 – x
b) x + 2 = 4
c) 3 + 7x + 1 = 6x + 8
d) 8x + 9 = 2 +6x + 4

Answer 1

ACTIVIDADES :

a) x – 3 = 3 – x

   x + x = 3 + 3

      2x = 6

        x = 3

b) x + 2 = 4

         x = 4 - 2

         x = 2

c) 3 + 7x + 1 = 6x + 8

        4 + 7x = 6x + 8

       7x - 6x = 8 - 4

                x = 4

d) 8x + 9 = 2 +6x + 4

   8x + 9 = 6x + 6

  8x - 6x = 6 - 9

          2x = -3

            x = -3/2