Question

(2.1-1.965):(0.12*0.45)-------------0.0325:0.13-1:0.25    0.16*6.25

Answer 1

0.0325:0.13-1:0.25 =  0,25 - 4 = - 3,5
(2.1-1.965):(0.12*0.45) =0,135 : 0,054 = 2,5
 0.16 * 6.25= 1