Question

resolva as equações ​

Answer 1

Resposta:

$k) \frac{x + 9}{9} = 1 \\ \\ x + 9 = 1 \times 9 \\ x = 9 - 9 \\ x = 0$

$l) \frac{4x + 3}{5} = 1 \\ \\ 4x + 3 = 1 \times 5 \\ 4x + 3 = 5 \\ 4x = 5 - 3 \\ 4x = 2 \\ \\ x = \frac{2}{4} = \frac{1}{2}$

$\frac{8x - 5}{2} = 9 \\ \\ 8x - 5 = 9 \times 2 \\ 8x - 5 = 18 \\ 8x = 18 + 5 \\ 8x = 23 \\ \\ x = \frac{23}{8}$