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plssss dauuucoroanaaa si ma abonezz​

Plssss Dauuucoroanaaa Si Ma Abonezz class=

Răspuns :

Notam cu x distanta totala a drumului

/-linie de fractie

1 zi - 40% din x => 40/100×x=4/10×x=2/5×x

(am simplificat fractia )

2 zi - 3/8 ×60/100x=>3/8×6/10x=3/8×3/5x

3 zi - 60 km

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2/5x+3/8×3/5×x+60=x

2/5x+9/40x+60=x |×40

16x+9x+2400=40x

25x+2400=40x

25x-40x=-2400

-15x=-2400

x= 160 km are traseul