Question

7(x-1)$\leq$5-2x

Answer 1

resolução:

7.(x - 1) <= 5 - 2x
7x - 7 <= 5 - 2x
7x + 2x <= 5 + 7
9x <= 12
x <= 12/9 (simplifique por 3)l
x <= 4/3

S = { x E R / x <= 4/3 }

Answer 2

$7(x-1) \leq 5 - 2x \\ \\ 7x -7 \leq 5-2x \\ \\ 7x +2x \leq 5+7 \\ \\ 9x \leq 12 \\ \\ \boxed{x \leq \frac{4}{3 }}$