1/3x + 1/4 *2/3x +30 = x
1/3x + 2/12X -x=-30
2/6x +1/6x -x=-30
-1/2x=-30
x=60 cała droga ma 60km
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1/3x + 1/4 *2/3x +30 = x
1/3x + 2/12X -x=-30
2/6x +1/6x -x=-30
-1/2x=-30
x=60 cała droga ma 60km