Odpowiedź:
4x-9x+15=6X+4
4x-9x-6x=4-15
-11x=-11/:-11
x=1
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Odpowiedź:
Odpowiedź:
4x-9x+15=6X+4
4x-9x-6x=4-15
-11x=-11/:-11
x=1