Question

solutia rationala a ecuatiei: -9x+2=5(x-1)

Answer 1

$- 9x + 2 = 5(x - 1)$

$- 9x + 2 = 5x - 5$

$- 9x - 5x = - 5 - 2$

$- 14x = - 7 \: | \times ( - 1)$

$14x = 7$

$x = \frac{7}{14}$

$x = \frac{1}{2} \: \in \: \mathbb{Q}$

Answer 2

$- 9x + 2 = 5(x - 1) \\ - 9x + 2 = 5x - 5 \\ - 9x - 5x = - 5 - 2 \\ - 14x = - 7 \\ x = - 7 \div ( - 14) \\ x = \frac{7}{14} \\ x = \frac{1}{2}$