-10/2 + (-1/5)+7 3/4 (-3,2)=
(1,2+2,8)*2 1/4 -2,6=
-2,3- (-1 1/5)-(2,8-(-1,2)=
(4/7 + 7/4)*3 1/2-1,2=
(4/5+5/4)*2 1/2+1,2=
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-10/2 + (-1/5)+7 3/4 (-3,2)= -30
(1,2+2,8)*2 1/4 -2,6= 6,4
-2,3- (-1 1/5)-(2,8-(-1,2)=-5,1
(4/7 + 7/4)*3 1/2-1,2= 6,92500
(4/5+5/4)*2 1/2+1,2= 6,32500
rozwiązanie w załączniku