[tex]2x + 1 = x + 3[/tex]
[tex]2x - x = 3 - 1[/tex]
[tex]x = 2[/tex]
[tex]3x + 2 = 2x + 3[/tex]
[tex]3x - 2x = 3 - 2[/tex]
[tex]x = 1[/tex]
[tex]4x - 6 = 4 - 6x[/tex]
[tex]4x + 6x = 4 + 6[/tex]
[tex]10x = 10 \: | \div 10[/tex]
[tex]x = 1[/tex]
[tex]4x + 6 = 6x + 16[/tex]
[tex]4x - 6x = 16 - 6[/tex]
[tex] - 2x = 10 \: | \div ( - 2)[/tex]
[tex]x = - 5[/tex]
