Question

-17+[2-{(-8)+3-(9*7-13*3)}]

Answer 1

-17+[2-{(-8)+3-(9*7-13*3)}]
= -17+[2-{(-8)+3-(63-39)}]
= -17+[2-{(-8)+3-(24)}]
= -17+[2-{(-8)+3-24)}]
= -17+[2-{(-8)-21}]
= -17+[2-(-29)]
= -17+[2+29]
= -17+31
= 14

Therefore,the value of -17+[2-{(-8)+3-(9*7-13*3)}] is "14"

Answer 2

Add the top two rows of numbers to obtain the bottom row;

4 2 9 8 6

+ 3 8 7 9 5

--------------------

= 8 1 7 8 1

Thus the number that replaces the question mark is 8