Odpowiedź :
[tex]\frac{5}{4}[/tex][tex]\frac{3}{4}[/tex]a) 4x - 3 (3x - 5) = 6x + 4
4x - 9x + 15 = 6x + 4
-5x + 15 = 6x + 4 |-15
-5x + 6x + 4 - 15
-5x - 6x - 11 |-6x
-5x - 6x = -11
-11x = -11 |:(-11)
x = 1
b) 8 - (4x - 12) = 8x - (3x - 2)
8 - 4x + 12 = 8x - 3x + 2
20 - 4x = 5x + 2 |-20
-4x = 5x + 2 - 20
-4x = 5x - 18 |-5x
-4x - 5x = -18
-9x = -18 |:(-9)
x = 2
c) [tex]\frac{5}{4}[/tex] (1 - x) - [tex]\frac{1}{4}[/tex] = [tex]\frac{3}{4}[/tex] (x - 4) + 3
[tex]\frac{5}{4}[/tex] - [tex]\frac{5}{4}[/tex]x - [tex]\frac{1}{4}[/tex] = [tex]\frac{3}{4}[/tex]x - 3 + 3
1 - [tex]\frac{5}{4}[/tex]x = x | - [tex]\frac{3}{4}[/tex]x
1 - [tex]\frac{5}{4}[/tex]x = [tex]\frac{3}{4}[/tex]x = 0
1 - [tex]\frac{8}{4}[/tex]x = 0
1 - 2x = 0 |-1
-2x = -1 |:(-2)
x = [tex]\frac{1}{2}[/tex]