Question

1)resolva as expressões a seguir

a) -68+{44+[29-(40-31+9)]}
b) -100+(97-[-(-28-37)+(-17-9)])

Answer 1

a)
-68+{44+[29-(40-31+9)]}
-68+{44+[29-(9+9]}
-68+{44+[29-18]}
-68+{44+[29+18]}
-68+{44+11}
-68+55=
-13

Answer 2

b) -100+(97-[+65-26])
-100+(97-39)
-100+58
-42