Ответы и объяснения

2011-09-18T17:40:36+00:00

(2 3\4+0.15-1 8\25):(21\2-13\4+0.04)=

(11/4+15/100-33/25)/(21/2-13/4+4/100)=

(275/100+15/100-132/100)/(1050/100-325/100+4/100)=

(158/100)/(729/100)=

158/100*100/729=

158/729