Odpowiedź:
o)
4 - 3x = 5(2 - x)
4 - 3x = 10 - 2x
- x = 6
x = - 6
p)
- 3x + 6 = 3 (2 - x)
- 3x + 6 = 6 - 3x
0x = 0
r)
6 (x + 4) = 5x + 1 + x
6x + 24 = 5x + 1 + x
0x ≠ - 23
równanie sprzeczne
s)
-2 (5x + 2) = 3 - 9x
-10x - 4 = 3 - 9x
-x = 7
x = - 7
t)
5 - (3 - 4x) = 5 (1 - x)
5 - 3 + 4x = 5 - x
3x = 3
x = 1
u)
-2 (4 - 5x) = 3 (4x + 3)
-8 - 10x = 12x + 9
22x = 17
[tex]x = \frac{17}{22}[/tex]
w)
3 (x + 3) = 2(x + 4) + x + 1
3x + 9 = 2x + 8 + x + 1
