-14,3*6,6+5,7*(-1,4)=
(23,42-54)*(-4,12+4.04)=
5/9*(-3 6/7)-(-3 5/7)*3/52=
(2 1/3 - 3 1/4)*(2 3/4-0.95)=

1)-14,3*6,6+5,7*(-1,4)= -94,38-7,98=-102,36.________2)(23,42-54)*(-4,12+4,04)=(-30,58)*(-0,08)=2,45.________3)5/9*(-3ц6/7-(-3ц5/7)*3/52=5/9*(-27/7)-(-26/7)*3/52=(-15/7)-(-3/14)=-15/7+3/14=-30/7+3/14=-27/14=-1ц13/14;_______________4)(2ц1/3-3ц1/4)*(2ц3/4-0,95)=(7/3-13/4)*(11/4-95/100)={(7*4-13*3)/(3*4)}* {(11*25-95)/100}={(28-39)/12}* {(275-95)/100}=-11/12*180/100={(-11*15)/100}=-165/100=-1ц65/100 = или=-1,65 или сокращаем =-1ц13/20;