Question

26+(-83)=-48+53=
-4,254+6.44=
5,9(-6,7)=
-369+(-858)=
-13,8+(-77,7)=
-78+(-80)=
-1,64+(-8.98)=

Answer 1

26+(-83)=-48+53=5
-4,254+6.44=2.186
5,9(-6,7)= - 39.53
-369+(-858)= -1227
-13,8+(-77,7)= -91.5
-78+(-80)= -159
-1,64+(-8.98)= -10.62