Question

Fill in the blank: $......+(-3+6)=(9+(-3\left)\right)+6$

• A. $-3$
• B. $6$
• C. $3$
• D. $9$

Answer 1

The correct option is D $9$

Addition is associative for integers.
$i.e.a+(b+c)=(a+b)+c$
$\therefore 9+(-3+6)=(9+(-3\left)\right)+6$.