Question

  1º )

Resolva as equações

a)       9x = 56

b)      X – 9 = 12

c)       7X – 8 = 4x + 4

d)      2X + 4 = x + 9

e)      12X – 8 = 10x + 6

f)        8x = 48

g)       6x = 54

h)      14X – 5 = 4x + 5

i)        X – 12 = 20

j)        4X – 6 = 2x + 4

ajudem​

Answer 1

Resposta:

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Explicação:

Answer 2

A) 9x = 56

x = 56 / 9

B) x - 9 = 12

x = 12 + 9

x = 21

C) 7x - 8 = 4x + 4

7x - 4x = 4 + 8

3x = 12

x = 12 / 3

x = 4

D) 2x + 4 = x + 9

2x - x = 9 - 4

x = 5

E) 12x - 8 = 10x + 6

12x - 10x = 6 + 8

2x = 14

x = 14 / 2

x = 7

F) 8x = 48

x = 48 / 8

x = 6

G) 6x = 54

x = 54 / 6

x = 9

H) 14x - 5 = 4x + 5

14x - 4x = 5 + 5

10x = 10

x = 10 / 10

x = 1

I) x - 12 = 20

x = 20 + 12

x = 32

J) 4x - 6 = 2x + 4

4x - 2x = 4 + 6

2x = 10

x = 10 / 2

x = 5