Question

12 • ( 0,6x + 11,6 ) = 177,36

Answer 1

12•(0,6+11,6)=146,4 вот так

Answer 2

12*(0,6х + 11,6)=177,36; 
7,2х +139,2=177,36;
7,2х=177,36-139,2;
7,2х=38,16;
х=38,16 : 7,2;
х=5,3.