Question

(1-2+9)+(9+2-1)+(5-1-9)

Answer 1

Answer:

Please refer the attachment.

#MarkAsBrainliest

Answer 2

(1-2+9)+(9+2-1)+(5-1-9)

(10-2)+(11-1)+(5-10)

8 + 10 -5

8+5

13