???

i really dont know i guess it woould be something like this:|40|= negative40 + 20 =20 which is 4/7 of 57% of 35 and 4/7 of 40 is 22.85.....    so unless you.......never mind i dont know circumference yet even but im a eager beaver so yahhh!?!??!................

X is the original number....then:

2 (x) + 20 = 4/7 x

2x + 20 =4/7x

20 = 4/7x -2x= - 1 3/7 x

20/-1 3/7 = x

-14 = x