negative one and a half
The sum of -3 and -4 is -7.
A negative plus a negative equals a negative.
4
Zero is the additive identity.
A negative plus a negative equals a negative.
Treat the "plus positive X" as "minus negative X". Example: Positive two plus positive two equals positive four. Positive two minus negative two equals positive four.
nope negative plus negative equals a negative -2+(-4)=-6 but negative times negative equals a positive
positive plus positive equals positive negative plus negative equals negative
+8 plus -4 is essentially the same as 8 - 4. Therefore the answer is four.
It equals negative 25!!
It is a straight line with gradient -A/B and intercept C/B.