(2,727:(-0,9)+1,9х(-5,3+1,58):4,8=
(2,727:(-0,9)+1,9*(-5,3+1,58)):4,8=-2,10375
2,727:(-0,9)=-3,03
-5,3+1,58=-3,72
1,9*(-3,72)=-7,068
-3,03-7,068=-10,098
-10,098:4,8=-2,10375
1)2,727:(-0,9)=-3,03 2)-5,3+1,58=-(5,3-1,58)=-3,03 3)-3,03•1,9=-5,757 4)-3,03+(-5,757)=-3,03-5,757=-8,787 5)-8,787