Question

[Nguyễn Trang Quyên]

(x+1)+(x+2)+(x+3)+....+(x+100)=5750

Answer 1

[Anh Bùi Kỳ]

Ta có:

(x + 1) + (x + 2) + ... +(x + 100) = 5750

100x + 1 +2 + 3 + 4 + 5 +... + 100= 5750

100x + \(\frac{1+100}{2}\) = 5750

100x + 1+ 100 = 11500

100x = 11399

x = 113,99