Odpowiedź:
1. 4x - 5 = 7 + 6x
4x - 6x = 7 + 5
-2x = 12 /:(-2)
x = -6
2. 2 (x - 3) = 4(5 - 2x) - 1
2x -6 = 20 - 8x - 1
2x + 8x = 20 - 1 + 6
10x = 25 /: 10
x = 2,5
3. [tex]\frac{4x + 1}{3}[/tex]= 1 - [tex]\frac{x - 1}{2}[/tex]
[tex]\frac{4x}{1}[/tex] + 1 = 1 - [tex]\frac{x}{2}[/tex] - [tex]\frac{1}{2}[/tex]
4x + 0,5x = 1 - 1 - 0,5
4,5x = -0,5 /: 4,5
x = - [tex]\frac{1}{9\\}[/tex]
