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Ambar11
a fost răspuns

Rezolvati cerinta:X+2x+3x+.......+100x=50.500

                 REPEDE

Răspuns :

1+2.++100=
100x101:2=5050
5050x=50500
x=50500:5050
x=10
Simo1973
X+2x+3x+.......+100x=50.500
X(1+2.....100)=50500
X100.101/2=50500
X=10

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