Question

(x+2)+(x+4)+(x+6)+...+(x+100)=2700

Answer 1

(x+2)+(x+4)+(x+6)+...+(x+100)=2700 (50 Nhóm)

(x+x+x+...+x)+(2+4+6+...+100)=2700

50*x+(100+2)*50/2=2700

50*x+2550=2700

50*x=150

x=3

Answer 2

2+4+6+...+100=2550

50x=2700-2550

50x=150

x=150:50

x=3

Answer 3

(x+x+x+..........+x)+(2+4+6+.........+100)=2700

x.50+2550=2700

x.50=2700-2550

x.50=150

x=150:50

x=3

Answer 4

=x+ ( 2+4+6+...+100)=2700

KC la 2

ta co SSH: (100-2) ;2 + 1=502

gia tri mot cap la : 100+2 =102

SC la: 50:2=25(cap)

tong cua day la : 25x102=2550

ta co: x + 2550=2700

x= 2700-2550

x=150

Answer 5

150 :50=3