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a fost răspuns

rezolvati ecuatia 2x+4x+6x+......+2000x=505000

Răspuns :

2x+4x+6x+......+2000x=505000
x(2+4+...+2000)=505000
2x(1+2+...+1000)=505000
1000x*1001*2/2=505000
1001000x=505000
x=505000/1001000=505/1001

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