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The - sign means negative so -- would mean negative negative and 2 negatives make a positive.

hope this makes sense

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Q: Why do 2 minus signs make a plus sign?
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Related questions

Do two plus signs make a minus?

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


What is a plus times a plus?

A plus times a plus is still a plus. Below is the way I remembered it: If there is not a minus sign, it is plus (positive). If there is 1 minus sign, it is minus (negative). If there are 2 minus signs, it is plus (positive).


When multipling a plus sign and a minus sign the end solution would be what sign?

It would be a minus sign. If the two signs are the same, the answer is positive. If the two signs are different, the answer is negative.


What are three signs in Excel?

There are many signs used in Excel. Three of them are the plus sign (+), the minus sign (-) and the multiplication sign (*).


How can you make the equation 987654321 equal 0 by only using two plus signs and one minus sign?

-987 + 654 + 321 = 0 .


Negative add to another negative is?

When you have a minus and a plus sign together, you simply ignore the plus sign. For example -5 + -3 is the same as -5 - 3 which is -8. If you have two minus signs together, you replace them with a plus sign. For example -5 - -3 is the same as -5 + 3 which gives -2. At school I learned a simple rule: 'Minus a minus is a plus'


What do the plus and minus signs in Windows Explorer mean?

The plus and minus signs indicate that you can expand or collapse that particular path location (i.e. drive or folder) to show or hide additional sub-sections of the path of a particular file. For example, click on the plus sign on the My Computer icon to expand and see all the drives that incorporate My Computer or click on the minus sign of a folder to hide the sub-folders that exist for that folder.


Why is there 2 minus signs at the start of a Trim Excel formula?

All functions in Excel start with the = sign. So you may be mistaking that for two minus signs. A minus sign will have no impact on an TRIM function as it is a text function.All functions in Excel start with the = sign. So you may be mistaking that for two minus signs. A minus sign will have no impact on an TRIM function as it is a text function.All functions in Excel start with the = sign. So you may be mistaking that for two minus signs. A minus sign will have no impact on an TRIM function as it is a text function.All functions in Excel start with the = sign. So you may be mistaking that for two minus signs. A minus sign will have no impact on an TRIM function as it is a text function.All functions in Excel start with the = sign. So you may be mistaking that for two minus signs. A minus sign will have no impact on an TRIM function as it is a text function.All functions in Excel start with the = sign. So you may be mistaking that for two minus signs. A minus sign will have no impact on an TRIM function as it is a text function.All functions in Excel start with the = sign. So you may be mistaking that for two minus signs. A minus sign will have no impact on an TRIM function as it is a text function.All functions in Excel start with the = sign. So you may be mistaking that for two minus signs. A minus sign will have no impact on an TRIM function as it is a text function.All functions in Excel start with the = sign. So you may be mistaking that for two minus signs. A minus sign will have no impact on an TRIM function as it is a text function.All functions in Excel start with the = sign. So you may be mistaking that for two minus signs. A minus sign will have no impact on an TRIM function as it is a text function.All functions in Excel start with the = sign. So you may be mistaking that for two minus signs. A minus sign will have no impact on an TRIM function as it is a text function.


How were the plus and minus sign invented?

The person who invented the plus sign is the same as the minus


How do you make a plus or minus sign on a mac?

Shift-Option-Plus (+) will produce the ± symbol on a Mac.


26 plus -3 - 11?

Not calculus. In the case of having a plus sign in front of a minus sign, the result is to subtract the number. The same goes for if you have a minus sign in front of a plus sign. Remember that if the signs are different, the result will be a subtraction, if the signs are the same, it will be an addition (ie a double negative (- -), or a double positive(+ +)). So this question, 26 + -3 -11 is the same as 26 -3 -11, so will equal 12.


What is the additive of -4?

If you mean the ADDITIVE INVERSE, change the minus sign to a plus sign. (And if you see a plus sign, you change it to a minus sign.)