Resposta:
[tex]\textsf{Leia abaixo}[/tex]
Explicação passo-a-passo:
[tex]\mathsf{x + 6 = 18}[/tex]
[tex]\mathsf{x = 18 - 6}[/tex]
[tex]\boxed{\boxed{\mathsf{x = 12}}}[/tex]
[tex]\mathsf{3x - 15 = 0}[/tex]
[tex]\mathsf{3x = 15}[/tex]
[tex]\boxed{\boxed{\mathsf{x = 5}}}[/tex]
[tex]\mathsf{7x - 2 + 4 = 14 - 5x}[/tex]
[tex]\mathsf{7x + 5x = 14 + 2 - 4}[/tex]
[tex]\mathsf{12x = 12}[/tex]
[tex]\boxed{\boxed{\mathsf{x = 1}}}[/tex]
[tex]\mathsf{4(x + 3) = 0}[/tex]
[tex]\mathsf{4x + 12 = 0}[/tex]
[tex]\mathsf{4x= -12}[/tex]
[tex]\boxed{\boxed{\mathsf{x= -3}}}[/tex]
[tex]\mathsf{3(2x - 1) = -4x + 3}[/tex]
[tex]\mathsf{6x - 3 = -4x + 3}[/tex]
[tex]\mathsf{6x + 4x = 3 + 3}[/tex]
[tex]\mathsf{10x = 6}[/tex]
[tex]\boxed{\boxed{\mathsf{x = \dfrac{3}{5}}}}[/tex]
