Question

Qual o valor de x na inequação [1 - 2.(x-1)] < 2?

Answer 1

[1-2.(x-1)]<2
1-2x+2<2
-2x<2-1-2
-2x< -1 (-1)
2x< 1
x>1/2

abraços

Answer 2

[1 - 2.(x-1)] < 2

[1 - (2x -2)] < 2

[1 - 2x + 2] < 2

-2x + 3 < 2

-2x < 2 - 3

-2x < -1  .(-1)

x > 1/2