Question

H x + 13 x = 28 letra i 2 x + 6 x = 40 J 9 x + 7x = 16 10 x - 5x = 15 l 6 x - 2x = 8 m 14 + x = 20 n x + 11 = 68 o 8 + 7 x = 22 p 2 x + 9 = 11 q 4 x -8 = 8 - 12 + 5x = 13

Answer 1

Oi...

h) x + 13x = 28

    14x = 28

        x = 28/14

        x = 2

i) 2x + 6x = 40

   8x = 40

      x = 40/8

      x = 5

j) 9x + 7x = 16

   16 x = 16

       x = 16/16

       x = 1

k) 10x - 5x = 15

     5x = 15

       x = 15/5

       x = 3

l) 6x - 2x = 8

      4x = 8

        x = 8/4

       x = 2

m) 14 + x = 20

      x = 20 - 14

      x = 6

n) x + 11 = 68

   x = 68 - 11

   x = 57

o) 8 + 7x = 22

   7x = 22 - 8

   7x = 14

    x = 14/7

     x = 2

p) 2x + 9 = 11

   2x = 11 - 9

   2x = 2

     x = 2/2

     x = 1

q) 4x - 8 = 8

    4x = 8 + 8

     4x = 16

       x = 16/4

      x = 4

r) -12 + 5x = 13

   5x = 13 + 12

  5x = 25

   x = 25/5

   x = 5

Espero ter ajudado, Bons estudos.