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Alexzutz
a fost răspuns

Rezolvati ecuatia x plus 2x plus 3x plus ...... plus 100=50500

Răspuns :

Milumil2000
x + 2x + 3x + ...... + 100x=50500
x(1+2+3+...+100)=50500
x((100+1)*100/2)=x*5050=50500
x=50500/5050=10

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