It depends on the arithmetic operation you are performing:---------------------------------In Addition Negatives and negatives have a negative sum. The only way to obtain a positive sum is to have a...
Use a number line to image this. Subtraction means "switch directions".
..._-2_-1_0_+1_+2_...
Adding a negative is the same as subtracting. You switch directions on the number line. -1 + -1 = -2 is...
A negative plus a negative is a negative number. It is a larger negative number, that is, it is a smaller number - IOW, it is farther to the left on the number line.
You probably meant to ask why...