8*7*x; 9*a*11b; 17x*2; 5*x*9*8*a*m; 5*x*9*m; 10*20c*17p
8*7*х=56х 9*а*11b=99ab 17x*2=34x 5*x*9*8*a*m=360xam 5*x*9*m=45xm 10*20c*17p=3400cp