Question

Resolva:
a) 9:{[-3.(11-8)+6]-6}
b) [(+23)+(-5)]:[12-(+3).(-2)]

Answer 1

a) 9:{[-3.(3)+6]-6}
9:{[-9+6]-6}
9:{-3-6}
9:{-9}
-1

b)[(+23)+(-5)]:[12-(3).(-2)]
[23-5]:[12+6]
18:18
1