x + ( x + 1 ) + ... + (x + 2011 ) = 2 037 150
( x + x + ... + x ) + ( 1 + ... + 2011 ) = 2 037 150
2012.x + 2 023 066 = 2 037 150
2012.x = 2 037 150 - 2 023 066
2012.x = 14 084
x = 14 084 : 2012
x = 7
Vậy x = 7
=> x + x + 1 + x + 2 + ...... + x + 2011 = 2037150
=> 2012.x + ( 1 + 2 + ...... + 2011 ) = 2037150
=> 2012.x + 2023066 = 2037150
=> 2012.x = 2037150 - 2023066 = 14084
=> x = 14084 : 2012 = 7
Tk mk nha
x + (x + 1) + (x + 2) + ... + (x + 2011) = 2037150
(x + x + ... + x) + (1 + 2 + ... + 2011) = 2037150
2012x + 2023066 = 2037150
2012x = 2037150 - 2023066
2012x = 14084
x = 7