Odpowiedź:
1) -4x + 6 = 30
-4x = 30 - 6
-4x = 24 /:(-4)
x = -6
2) -6x + 8 = 4
-6x = 4 - 8
-6x = -4 /:(-6)
[tex]x = \frac{4}{6} \\x = \frac{2}{3}[/tex]
3) 5x - 14 = 6
5x = 6 + 14
5x = 20 /:5
x = 4
4) 9 - x = 24
9 - 24 = x
-15 = x
5) 5 + 4x = 29
4x = 29 - 5
4x = 24 /:4
x = 6
6)
[tex]\frac{1}{5} x - 2 = 4\\\frac{1}{5} x = 4 + 2\\\frac{1}{5} x = 6 / :\frac{1}{5} \\x = 6 *5\\x = 30[/tex]
Szczegółowe wyjaśnienie:
