Odpowiedź :
1]
[tex]-7x=42 \ \ |:(-7)\\\\\huge\boxed{x=-6}[/tex]
2]
[tex]4x+2=10 \ \ |-2\\\\4x=8 \ \ |:4\\\\\huge\boxed{x=2}[/tex]
3]
[tex]5-2x=-3 \ \ |-5\\\\-2x=-8 \ \ |:(-2)\\\\\huge\boxed{x=4}[/tex]
1]
[tex]-7x=42 \ \ |:(-7)\\\\\huge\boxed{x=-6}[/tex]
2]
[tex]4x+2=10 \ \ |-2\\\\4x=8 \ \ |:4\\\\\huge\boxed{x=2}[/tex]
3]
[tex]5-2x=-3 \ \ |-5\\\\-2x=-8 \ \ |:(-2)\\\\\huge\boxed{x=4}[/tex]