Question

A) (+5)+(-3)-(+12)+(-1)
B) 10+{5-(-3+1)}
C) 23-{1+[5-(+13-2+1)]}

Answer 1

Olá,

Vamos lá,

A) (+5)+(-3)-(+12)+(-1)
5 - 3 - 12 - 1
-11

B) 10+{5-(-3+1)}
10+{5-(-2)}
10+{5+2}
10+ 7
17

C) 23-{1+[5-(+13-2+1)]}
23-{1+[5-(+12)]}
23-{1+[5-12]}
23-{1+[-7]}
23-{1-7}
23-{-6}
23 +6
29