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Adding is the opposite of subtracting
Subtracting a fraction is the same as adding its negative.
Subtracting a negative is the same as adding the equivalent positive. For example, subtracting minus 10 is the same as adding 10.
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.
Adding a negative is the same as subtracting a positive. 9 - 9 = 0 9 + (-9) = 0
adding its opposite?
Adding is the opposite of subtracting
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Subtracting a fraction is the same as adding its negative.
Subtracting a negative is the same as adding the equivalent positive. For example, subtracting minus 10 is the same as adding 10.
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.
Adding a negative is the same as subtracting a positive. 9 - 9 = 0 9 + (-9) = 0
When adding or subtracting fractions their denominators must be the same
Ensure that the denominators are the same when adding or subtracting fractions.
Yes.
This is effectively the same as lining up the decimal points when adding or subtracting ordinary decimal fractions.
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.