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Q: Why does subtracting a number give the same result as adding its opposite?

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Difference. A sum is the result of adding two numbers, and a difference is the result of subtracting two numbers.

Because of the definition of addition and subtraction. When looking at a real number line: when you add you move to the left or up, when you add the opposite of a number you move in the opposite direction.

8

They are both binary operations. The inverse of adding X to a number is the subtraction of X from the result and, conversely, subtracting Y from a number is the inverse of adding Y to the result.

-3. Subtracting a negative number yields the same result as adding a positive.

-4

The rule for significant figures is that when adding, subtracting, dividing, or applying any mathematical treatment, one cannot calculate a result that has more significant digits than that of the input with the least number of significant digits. This is because any result cannot be more accurate than the least accurate input.

Zero

The answer 25. Multiplying two negative numbers results in a positive answer. Adding a negative number to that result is the same as subtracting a positive.

-2

Subtracting a negative is like adding a positive; the result will be positive.

"No. For instance -19 - 17 = -36. Not -2 as it may seem.-5 - 34 = -39. Even though a quick glance would make it seem to be 29"That is wrong... you are subtracting a positive from a negative the question consists of subtracting a positive from a negative. 15 {a positive} - (-5) {a negative} = 20 you minus the negative sign on the -5 to make +5 but we write it just as 5.Anyways to answer the original question. Yes Subtracting a number is the same as adding it's opposite, therefore adding a positive to a positive will always result in a positive.

Their difference.

Depends. If you are subtracting a bigger number from a smaller number, such as 3 - 5, you will get a negative result, -2. If you are subtracting a smaller number from a bigger number, such as 12 - 3 you will get a positive result, 9.

a number lower than the original number

the "difference"

28. Subtracting a negative number gives the same result as adding a positive.

Subtracting

Negative 15 (-15). Subtracting a positive yields the same result as adding a negative.

The result of adding and integer and its opposite is negation. A + (-A) = 0 For all real integers. It has the effect of adding 0 to a sum. Example: 32 + 16 + (-16) + 5 = 37 = 32 + 0 + 5.

Any change (whether it be adding or subtracting) to the number of electrons would result in an ion. When an electron is added, the atom is called an anion. (If electrons are subtracted, it is a cation.)

The result of subtracting 2 numbers is the difference.

Alberto

3

The answer is the number you first wrote down plus four. Jeeze! That's hard! Is that like your homework or somethin?