# Thread: how to solve this: 9-[(3-2)-8]

1. ## how to solve this: 9-[(3-2)-8]

i can't get the right answer for this question.

9-[(3-2)-8]

the answer is 16 but i have no idea why it is 16

this is what i am doing.

i am doing in the parentheses first (3-2) which is 1
then i change it around 9-(-1)-8 ===> 9+ (-1) +(-8) which is 0
the first time i tired i got -17 now i am getting 0
idk

2. Originally Posted by Candy101
i can't get the right answer for this question.

9-[(3-2)-8]

the answer is 16 but i have no idea why it is 16

this is what i am doing.

i am doing in the parentheses first (3-2) which is 1
then i change it around 9-(-1)-8 ===> 9+ (-1) +(-8) which is 0 Mr F says: No. The next step is to calculate the number in the square bracket: 1 - 8 = -7.
the first time i tired i got -17 now i am getting 0
idk
Then 9 - [-7] = ....

3. oohhh..i cant believe i missed that lol i tried for so long! but i got tht part down how is the answer 16?

dont 9-(-7) 2?
this is how i did it
i changed 9-(-7) to ===> 9+(-7) so i got 2?
i still dont understand how the answer is 16

4. Originally Posted by Candy101
oohhh..i cant believe i missed that lol i tried for so long! but i got tht part down how is the answer 16?

dont 9-(-7) 2?
this is how i did it
i changed 9-(-7) to ===> 9+(-7) so i got 2?
i still dont understand how the answer is 16
9 - 7 = 2.

9 - (-7) = 9 + 7 = 16. Double minus becomes +. Review your arithmetic rules.

5. ooh thanks!!!!!

xox