1]
[tex]2x+4=14\\\\2x=14-4\\\\2x=10 \ \ |:2\\\\x=5[/tex]
2]
[tex]3x-2+2x+5=12\\\\3x+2x=12+2-5\\\\5x=9 \ \ |:5\\\\x=1,8[/tex]
3]
[tex]-x+4+4x-5=8\\\\-x+4x=8-4+5\\\\3x=9 \ \ |:3\\\\x=3[/tex]
4]
[tex]\frac{1}{3}x=4 \ \ |\cdot3\\\\x=12[/tex]
5]
[tex]\frac{1}{2}x+5=-10\\\\\frac{1}{2}x=-10-5\\\\\frac{1}{2}x=-15 \ \ |\cdot2\\\\x=-30[/tex]