Odpowiedź:
2x+18=18
15=x+15
-16=y-16
7x + 9 = 9
5 = 5x + 5
10 = 10x + 10
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Odpowiedź:
2x+18=18
15=x+15
-16=y-16
7x + 9 = 9
5 = 5x + 5
10 = 10x + 10