Respuesta :
					                   lets first find the value of 'b' 
15b = 55
b = 55/15 = 11/3 ...
now the value of 3b
=> 3 X11/3
=33/3 =11 ...
Hope it helps !!!
					                
					             15b = 55
b = 55/15 = 11/3 ...
now the value of 3b
=> 3 X11/3
=33/3 =11 ...
Hope it helps !!!
 
					                  