Odpowiedź :
1)
[tex]2x+4=10\\\\2x=10-4\\\\2x=6 \ \ |:2\\\\\boxed{x=3}[/tex]
2)
[tex]4x-2=30\\\\4x=30+2\\\\4x=32 \ \ |:4\\\\\boxed{x=8}[/tex]
3)
[tex]5x+10=60\\\\5x=60-10\\\\5x=50 \ \ |:5\\\\\boxed{x=10}[/tex]
[tex]2x + 4 = 10\\\\2x = 10 - 4\\\\2x = 6 | : 2\\\\x = 3 \\\\\\4x - 2 = 30\\\\4x = 30 + 2\\4x = 32 | : 4\\\\x = 8\\\\\\5x + 10 = 60 \\\\5x = 60 - 10\\\\5x = 50 | : 5\\\\x = 10[/tex]