Question

Resolva as Equações abaixo:

3. (x - 1 ) - 2x ≥ 13


9. ( x- 2 ) - 5 . (x - 3 ) < 1

Answer 1

$3. (x - 1 ) - 2x \geq 13 \to \\\\ 3x - 3 - 2x \geq 13 \to \\\\ 3x-2x \geq 13+3\to \\\\ x \geq 16$





$9. ( x- 2 ) - 5 . (x - 3 ) \ \textless \ 1\to \\\\ 9 x- 18- 5x +15\ \textless \ 1\to \\\\ 9 x- 5x \ \textless \ 1+18-15\to \\\\ 4x\ \textless \ 4\to \\\\ x\ \textless \ \frac{4}{4} \to \\\\ x\ \textless \ 1$

Answer 2

3 ( x - 1 ) - 2x ≥ 13
3x -3 - 2x ≥ 13
3x - 2x ≥ 13 + 3
x ≥ 16