1)
[tex]2x+5=6 \ \ /-5\\\\2x=1 \ \ /:2\\\\\huge\boxed{x=0,5}[/tex]
2)
[tex]3x-8=16 \ \ /+8\\\\3x=24 \ \ /:3\\\\\huge\boxed{x=8}[/tex]
3)
[tex]8x+30=30 \ \ /-30\\\\8x=0 \ \ /:8\\\\\huge\boxed{x=0}[/tex]
4)
[tex]48+8x=8 \ \ /-48\\\\8x=-40 \ \ /:8\\\\\huge\boxed{x=-5}[/tex]
5)
[tex]20x-90=10 \ \ /+90\\\\20x=100 \ \ /:20\\\\\huge\boxed{x=5}[/tex]
2x + 5 = 6. .spr. 2 * 0,5 + 5 = 1+5 = 6
2x = 6-5
2x = 1
z = 1/2
3x-8= 16. spr. 3 * 8 - 8 = 24-8 = 16
3x = 16+8
3x = 24 /:3
x = 8
8x + 30 = 30. spr. 8*0+30 = 0+30 = 30
8x = 30-30
x = 0
48 + 8x = 8. spr. 48 + 8 * (-5) = 48 - 40 = 8
8x = 8 -48
8x = -40 /: 8
x = -5
20x - 90 = 10. spr. 20*5-90 = 100-90 = 10
20x = 10+90
20x = 100 /:20
x = 5
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