Simplify.

1+[2x-3(1.8/0.2)]

1+[2x-3(1.8/0.2)]                 <-  first you do 1.8/0.2 which equals 9

1+[2x-3(9)]                 <- Now you multiply 3 by 9 which equals 27

1+[2x-27]            <- You take off the [ ] since there is only addition and subtraction

1+2x-27         <-  You do 1 - 27 which equals -26 and the final answer is

2x - 26