HELP HELP HELP HELP HELP HELP HELP I GIVE BRIANIST REALLY NEED IT PLS NO WRONG ANSWERS! Question: The sum of an integer and its opposite is always, sometimes or never equal to zero?

Always

An example would be 5 + (-5) = 0

Another example is -7 + 7 = 0

The opposite of any positive number is the negative version of that number.

Adding any positive number to its negative counterpart always leads to 0.

A real world example could be "You start on the ground floor. Then you go up 9 floors, and then go down 9 floors in a building, so ultimately you're at the ground floor again". By the term "ground floor", I mean "floor 0".

could you reply to this with the question so i can ?

$20.01

step-by-step explanation:

the sale price is (1.00 - 0.77)($87), or 0.23($87), or $20.01.