21/3:11/6=0,45х
х=(21*6/3*11)/0,45
х=(126/33):(45/100)
х=(42/11):(9/20)=(42*20)/(11*9)=840/99=80,(48)
21/3:11/6=0,45х
х=(21*6/3*11)/0,45
х=(126/33):(45/100)
х=(42/11):(9/20)=(42*20)/(11*9)=840/99=80,(48)