Seventy plus negative 12, or seventy minus 12 (same thing) is equal to 58.
3-(-9) Considering a negative plus a negative equals a positive your equation can be rewritten as 3+9 Which equals 12
Negative 12 minus 3 plus 9 is equal to -6
6
When you minus a negative number it is the same as adding a positive number, since minus a negative number is a plus. So 48 minus (-12) is 48 + 12 = 60
-12
I'll do ya one better - 12 plus 8 equals what?
-12 + 18 - (-15) = -12 + 18 +15 = 21
-12
negative two thirds
6
If: -x-x = -12 then -2x = -12 and so x = 6 because -2*6 = -12