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Q: How do I solve whole number equations that contain addition or subtraction?

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Subtraction is the addition of a negative number.

0 is the identity

77-9=68

multiplication-addition-subtraction-division

It is the "additive identity".

Yes.Yes.Yes.Yes.

Addition and subtraction can be thought of as the same thing because subtracting a negative number is the same as adding it and adding a negative number is the same as subtracting it.

It is tough to find similarities, but I can think of couple listed below. 1. Both Addition and Subtraction can only be done on numbers. 2. Subtraction is also addition with negative number. Hope this helps.

In the same wasy as you solve equations except that if you multiply or divide both sides by a negative number, then the inequality changes direction.

Real numbers are closed under addition and subtraction. To get a number outside the real number system you would have to use square root.

They both include number and they use your head

When you have a negative number after the subtraction sign it turns in to addition. For example +7 - (-7) = 14 and (-7) - 7 = (-14)

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