Question

RESOLVA AS QUESTÕES ABAIXO:
a) x + 9 = -3
b) 8x – 13 = x + 5 + 2x
c) 17 + x = 15 d) x + 50 = -7
e) 9x = 18 f) x + 48 = 72
g) x + 20 = 15
h) 11 + 2x + 3 = -5x + 2 + x
i) 7x = 14
j) 6x – 10 = 2x + 14

ME AJUDEM POR FAVOR

Answer 1

Resposta:

a) x + 9 = -3

  x = -3 - 9

  x = -12

b) 8x - 13 = x + 5 + 2x

  8x - 2x - x = 5 + 13

  5x = 18

  x = 18/5

c) 17 + x = 15

   x = 15 - 17

   x = -2

e) 9x = 18

   x = 18/9

   x = 2

g) x + 20 = 15

   x = 15 - 20

   x = -5

h) 11 + 2x + 3 = -5x + 2 + x

   11 + 3 - 2 = -5x + x -2x

   12 = -4x - 2x

   12 = -6x

   12/-6 = x

    -2  = x

i) 7x = 14

  x = 14/7

  x = 2

j) 6x - 10 = 2x + 14

  6x - 2x = 14 + 10

  4x = 24

  x = 24/4

  x = 6