Rozwiąż zadanie:
3+ x/3 = 9 - x
to x/3 jest w ułamku.
nie wiem jak to obliczyć. pomoooocy!
3+x/3=9-x /*3
9+x=27 -3x
3x +x=27 -9
4x=18/:4
x=4,5
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3+x/3=9-x /*3
9+x=27 -3x
3x +x=27 -9
4x=18/:4
x=4,5