Question

calcule:
a- (-113)+(57)+(279)=

b- (+77)+(-36)+(-89)=

c- (-93)+(-31)+(78)=

Answer 1

a) -113+57+279=
-113+336= 223

b) +77-36-89=
+77-125= -48

c) -93-31+78=
-124+78= -46