Question

(x+2)+(x+6)+(x+8)+...+(+50)+(x+52)=1092

 

Answer 1

(x+2)+(x+4)+(x+6)+..........+(x+50)+(x+52)=1092

x+2+x+4+x+6+...........+x+50+x+52=1092

(x+x+x+............+x)+(2+4+6+........+50+52)=1092

26x+702=1092

26x=1092-702

26x=390

x=390:26

x=15

Answer 2

dễ quá!

thôi đừng làm

Answer 3

x=15. dung 10000000000000000000000000000%

Answer 4

x=15 đúng đó

Answer 5

kho qua