Odpowiedź:
1)
2x - 7 = 8x - 3
2x - 8x = -3 + 7
-6x = 4 /:(-6)
x = - [tex]\frac{2}{3}[/tex]
2)
[tex]\frac{1}{8}[/tex]x - 2 = 5
[tex]\frac{1}{8}[/tex]x = 5 + 2
[tex]\frac{1}{8}[/tex]x = 7 /*8
x = 56
3)
-x - 4 = 7
-x = 7 + 4
-x = 11 /*(-1)
x = -11
4)
[tex]\frac{x-2}{3}[/tex] = 11 /*3
x - 2 = 33
x = 33 + 2
x = 35
5)
[tex]\frac{2x+x}{4}[/tex] = 1 /*4
2x + x = 1
3x = 1 /:3
x = [tex]\frac{1}{3}[/tex]
