(-5,8+3,6)(-1,2)-3,04=2,2*1,2-3,04= -0,4
-6,03*2,1-(-0,14)(-0,05)=-12,663-0,007= -12,67
7/18*(-1 4/7)-(-4/21)(-1 1/6)= -7/18*11/7-4/21*7/6= -11/18-4/18= -15/18= - 5/6
(-1 7/8*1 4/5+9/16)(-8/9)=( -3 6/16+9/16)( -8/9)=(- 2 13/16)(-8/9)=45/16*8/9=5/2=2 1/2=2,5