реши уравнения. 32:b=64:8; y:4=49:7; 380-b=330-175; t+32=185-143;

32:b=64:832:b=8b=32:8b=4y:4=49:7y:4=7y=7•4y=28380-b=330-175380-b=155b=380-155b=225t+32=185-143t+32=42t=42-32t=10