Can someone please explain: (+8) + (-15) { = -(15-8) , Correct Answer is -7 } My answer is +7, which is wrong. Need clarification.

You have (+8) + (-15) = -(15 -
8)

The result of this is -7 because you simplify the
expression as follows:

(+8) +
(-15)

remove the brackets, as the sign before (-15) is +,
eliminate it without altering -15.

=> 8 -
15

=> -7

[ If there is
a minus sign before the brackets, when the brackets are opened the sign of all the terms
in the brackets are reversed, else for a plus sign before the brackets they remain the
same. ]

Here the terms 8 and -15 are being added, the
result will be a negative number given that 15 > 8 and equal to 7 as 15 - 8 =
7.

Hope the explanation
helped.

The result of (+8) + (-15) =
-7