Question

AYUDENME PORFIIIS
PASO POR PASO ​

Answer 1

a)  

7 - [1 + (9-13)]

7- (1-4)

7+3 = 10

b)

-9+ [8-(13-4)]

(8-9)- 9  

-9-1 = -10

c)  

12 - [6-(15-8)]

-(6-7)+12

12+1 = 13

d)

-17 +[9-(3-10)]

(9+7) - 17

16-17 = -1

e)

2 +[6-(4-2+9)]

2+(6-11)

2-5 = -3

f)

15-[9-(5-11+7)]

15-(9-1)

15-8 = 7