Question

A -6-4+9+1-10+9
B 13-6-1+2-13+6+
C 14-4-3+6+1-11
D 10-13-6+10+13-8

Answer 1

Olá,

Vamos lá,

A -6-4+9+1-10+9 
= -20 + 19
= -1

B 13-6-1+2-13+6+
= -20 +21
= 1

C 14-4-3+6+1-11
= -18 + 21
= 3

D 10-13-6+10+13-8
= -27 + 33
= 6

Bons estudos !!

Answer 2

Bom dia ☺

a)

-6-4+9+1-10+9
--10 + 9 + 1 -10 +9
-1+1-10+9
-10+9
=  - 1

b)

13-6-1+2-13+6
7-1+2-13+6
6+2-13+6
8-13+6
= 1 

c)

14-4-3+6+1-11
10-3+6+1-11
7+6+1-11
13+1-11
14-11
=3

d)

10-13-6+10+13-8
-3-6+10+13-8
-9+10+13-8
1+13-8
14-8
= 6


Bons estudos :)