Resposta :
Olá,
[tex] \tt \: 3(x - 3) + 2 = 2[-(x – 5) – 4(2x + 1)] \\ \tt \: 3x - 9 + 2 = 2[ - x + 5 - 8x - 4] \\ \tt \: 3x - 7 = 2[ - 9x + 1] \\ \tt \: 3x - 7 = - 18x + 2 \\ \tt \: 3x + 18x = 2 + 7 \\ \tt \: 21x = 9 \\ \tt \: x = \dfrac{9}{21} \\ \tt \: x = \dfrac{ {9}^{ \div 3} }{ {21}^{ \div 3} } \\ \tt \: x = \dfrac{3}{7} \\ \\ \tt \: S = \left \{ \: \dfrac{3}{7} \right \}[/tex]