Question

[Thư Nguyễn (๖team lion๖)]

g, (x + 1) + (x + 2) + (x + 3) + (x + 4) + (x + 5) = 40

HELPPPPPPPPPPPPPPPPPP

CẦNNNNNNNNNNNNNNNNNNNNNNN

GẤPPPPPPPPPPPPPPPPPPPPPPPPPP

TRONG VÀI PHÚT

HELPPPPPPPPPPPPPPPPPPPPPP

Answer 1

[:3]

(x + 1) + (x + 2) + (x + 3) + (x + 4) + (x + 5) = 40

x . 5  + ( 1 + 2 + 3 + 4 + 5 )  = 40

x . 5 + 15 = 40

x . 5         = 25

x              = 5 

Answer 2

[Tran Le Khanh Linh]

(x+1)+(x+2)+x(x+3)+(x+4)+(x+5)=40

<=> x+1+x+2+x+3+x+4+x+5=40

<=> 5x+15=40

<=> 5x=25

<=> x=5

Vậy x=5