-- If they're being multiplied or divided, then they make a minus.
-- If they're being added or subtracted, then they can make either a plus or a minus.
It depends on which one is bigger.
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Your question does not make sense. It would probably be interpreted as a + = ++a ---a
A plus + a plus is a plus.
In addition and subtraction, if the plus sign is larger than the minus sign, then it's a plus. For example: +10 minus -20 = -10 If the plus sign is smaller than the minus sign, the answer will be a minus. For example: -10 minus + 20 = -10 In multiplication, if you have 2 plus signs, the answer will be a plus sign. If you have 2 minus signs, the answer will be a plus sign then, too. But if you have a plus and a minus sign, then the answer will be a minus. For example: +5 x + 2 = +10 -5 x - 2 = +10 -5 x +2 = -10
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Yes it does. A minus is the opposite of something, so the minus of a minus is a plus.