Answer:
1 ) 7
2 ) 4
3 ) it is always zero !!
Step-by-step explanation:
number 1 is easy !! its always the positive value of whatever number is inside the brackets.
number two, since the signs are both negative, you just divide it normally !! so thats 4 !
and the last one is just a simple rule, where it is always zero.
i hope this helps !
