Question

me ajudem nessas contas pfvvv

A) - X + 3 = 5

B) - 2 = x +6

C) - x - 3 = 8

D) 3x = 12

E) -2 = x + 6

F) - x -3 = 8

G) 3x = 12

h) -2x = 5

i) 8 = 4x

urgente pfvv​

Answer 1

Resposta:

a) -x + 3 = 5

-x = 5 - 3

(-x = 2). -1

x = -2

b) -2 = x + 6

-x = 6 + 2

(-x = 8). -1

x = -8

c) -x - 3 = 8

-x = 8 + 3

(-x = 11). -1

x = -11

d) 3x = 12

x = 12/3

x = 4

e) -2 = x + 6

-x = 6 + 2

(-x = 8). -1

x = -8

f) -x - 3 = 8

-x = 8 + 3

(-x = 11). -1

x = -11

g) 3x = 12

x = 12/3

x = 4

h) -2x = 5

(-x = 5/2). -1

x = -5/2 ou x = -2,5

i) 8 = 4x

-4x = -8

-x = -8/4

(-x = -2). -1

x = 2