Ответы и объяснения

2013-04-30T11:42:44+00:00

(1+2/5)*(2+2/3)-(1+2/3)*(3+1/2)=(1+0.4)*(2+2/3)-(1+2/3)*(3+1/2)=1.4*(2+2/3)-(1+2/3)*(3+1/2)=1.4*(2+2/3)-(1+2/3)*(3+1/2)=1.4*8/3-(1+2/3)*(3+1/2)=56/15-(1+2/3)*(3+1/2)=56/15-(1+2/3)*(3+1/2)=56/15-5/3*(3+1/2)=56/15-5/3*(3+0.5)=56/15-5/3*3.5=56/15-35/6=-2.1