Resposta:
a)
[tex]17 - 7(x - 1) = 2x \\ \\ 17 - 7x + 7 = 2x \\ \\ -7x - 2x = - 17 - 7 \\ \\ -9x = - 24 \\ \\ x = \dfrac{-24÷3}{-9÷3} \\ \\ \green{ x = \dfrac{8}{3}}[/tex]
