a)
[tex]11x-6=7x-4\\\\11x-7x=-4+6\\\\4x=2 \ \ |:4\\\\x=0,5[/tex]
b)
[tex]4x+3=9x-12\\\\4x-9x=-12-3\\\\-5x=-15 \ \ |:(-5)\\\\x=3[/tex]
Odpowiedź:
a) 11 x - 6 = 7 x - 4
11x - 6 = 7x - 4
4x = 2 /:4
x = 2/4
x = 1/2
b) 4 x + 3 = 9 x - 12
4x + 3 = 9x - 12
5x = 15 /:5
x = 3
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