We're confident that we could probably answer that
if we knew what the "opposite" of a number is.
Zero. e.g. The opposite of plus 15 is minus 15 and 15-15 = 0
Why is the opposite of 15 not 1/15 ? It is the reciprocal.
Why is the opposite of 15 not 51 ? It is a mirror.
Likewise, -15 is the "negative of" 15. The opposite of a positive is always a negative.
Difference. A sum is the result of adding two numbers, and a difference is the result of subtracting two numbers.
Subtract the number you first thought of.
sum
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.
9
adding its opposite?
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.
it is the same as adding a negative number to a positive number
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.
-7.800000000000001
Difference. A sum is the result of adding two numbers, and a difference is the result of subtracting two numbers.
Subtract the number you first thought of.
It is the same as adding a positive and adding a negative number
No - adding an odd quantity of odd numbers will always result in an odd number.
Adding a force acting in one direction to a force acting in the opposite direction is called vector addition, which involves considering the magnitudes and directions of the forces. Adding two numbers is arithmetic addition, where the magnitudes are combined without considering direction.
sum
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.