Odpowiedź:
5*x+7-3*x=13
5x+7-3x=13
2x+7=13 /-7
2x= 6 /:2
x=3
:))
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Odpowiedź:
5*x+7-3*x=13
5x+7-3x=13
2x+7=13 /-7
2x= 6 /:2
x=3
:))