Question

A) $4x + 8 = 9$

B) $40 = 9x + 37$

C)$\frac{x}{3} - 8 = - 2$

D) $- 2x - 10 = 1$

E) $\frac{5 - 10}{7} = 1$

F) $- 4x + 1 - 3 = 2x + 7$

Answer 1

$a) \: 4x + 8 = 9 = > 4x = 9 - 8 = 4x = 1 = > x = \frac{1}{4}$
$b) \: 40 = 9x + 37 = > 40 - 37 = 9x = > 3 = 9x = > x = \frac{3}{9}$
$c) \: \frac{x - 24}{3} = - 2 = > x - 24 = - 6 = > x = 18$
$d) \: - 2x - 10x = 1 = > - 12x = 1 = > x = - \frac{1}{12}$
$e) \: \frac{5 - 10}{7} = 1 = > \frac{ - 5}{7} = 1 = > - 5 = 7(impossível)$
$f) - 4x + 1 - 3 = 2x + 7 = > - 4x - 2x - 2 = 7 = > - 6x = 7 + 2 = > - 6x = 9 = > x = - \frac{9}{6}$
Espero ter ajudado