Răspuns :
x(1 + 2 + 3 + 100) = 5050 => 100•101/2•x =5050 => x = 5050/5050 = 1
x+2x+3x+...100x=5050
x(1+2+3+1--)=5050
scuti din paranteza
x=5050/5050
x=1
x+2x+3x+...100x=5050
x(1+2+3+1--)=5050
scuti din paranteza
x=5050/5050
x=1