Question

X =

a) 20
b) 40
c) 80

Answer 1

The answer is b) 40

Have a great day!

-Fishtank

Answer 2

`x = (1)/(2) (x + 60 - 20)`


`x = (1)/(2) (x + 40)`


`x = (1)/(2)x + 20`


`x - (1)/(2)x = 20`


`(1)/(2)x = 20`


`x = 20 * 2`


`x = 40`