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ShakeStar2000
a fost răspuns

Rezolvati ecuatia:
x+2x+3x+4x.....100x = 50.500 Ajutati-ma va rog!

Răspuns :

 - X+2x+3x+4x+5x...100x=5050 5050x=5050 x=5050/5050 x=1 ... +100)=5050 1+2+3+4+....+100=100*101:2=5050 5050*x=5050 x=1. (1) 5 1. ista e raspunsul
x+2x+3x+4x=100x-10x =90x