Question

5 .[(-18) . 2]
[(-17+4)] + [6+(-3)]+12
(19 . 13) + [19 . 9-3)]
[35 + (-75)] + [(-25)+65}+100

Answer 1

a)5.[(-18).2]=
5.[(-36).2]=
5.(-72)=-360
b)[(-17+4)]+[6+(-3)]+12= (-13)+[6-3]+12=
-13+3+12=
-13+15= 2
c)(19.13) + [19.9-3]=
247+[171-3]=
247+168= 79
d)[35+(-75)]+[(-25)+65]+100=
[35-75]+40+100=
-40+140= 100