1: we bring all the x to one member, changing its sign (I use x, consider it a p)
[tex]5x - 8x - 14 = + 4[/tex]
2 we bring all the non-x to the other member
[tex]5x - 8x = + 14 + 4[/tex]
3 we solve the members
[tex](5 - 8)x = - 3x[/tex]
[tex]( + 14 + 4) = + 18[/tex]
4 we divide 18 by -3
[tex] - 3x = + 18[/tex]
[tex]x = 18 \div - 3[/tex]
[tex]18 \div - 3 = - 5[/tex]
[tex]x = - 5[/tex]
my English is so bad lol