Question

(1,65-0,3x):0,612=400​

Answer 1

(1,65-0,3х):0,34=4,5

(1,65-0,3х) =4,5*0,34

1,65-0.3х=1,53

0,3х=0,12

х=0,12 : 0,3

х=0,4