Question

Inequação

7(x-1) < 5 - 2x

Answer 1

Resposta:

7 ( x-1 ) < 5 - 2x

7x - 7 < 5 - 2x

7x + 2x < 5 + 7

9x < 12

x < 12/9

simplificando

x < (12:3)/(9:3)

x < 4/3

S= { x ∈ R / x < 4/3 }