Odpowiedź:
13x - 6x = 20 + 8
7x = 28
x = 4
5x - 8x = 9 - 10
-3x = -1
3x = 1
x = 1/3
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Odpowiedź:
13x - 6x = 20 + 8
7x = 28
x = 4
5x - 8x = 9 - 10
-3x = -1
3x = 1
x = 1/3