Question

10-{-2+(9+3)-1}=?
21-{+5-(-2-3)7}=?
-12+{27+[3-(-2).(-6]}​

Answer 1

Resposta:

1, -19, 6

Explicação passo-a-passo:

10-{-2+(9+3)-1}=  10-{-2+12-1} = 10 - 9 = 1

21-{+5-(-2-3)7}= 21-{+5-(-5)7}= 21 - [5+35] = 21 -40 = -19

-12+{27+[3-(-2).(-6]}​ = -12+{27+[3-12]}​  = -12+{27-9} = -12 +18 = 6​