Yes. For example:
* 0 + 0 = 0
* 1/1 + (-1/1) = 0
* 1/2 + 1/3 is not equal to zero.
If the second rational number is the additive inverse of the first, then yes the sum of two rational numbers can be zero.
The additive inverse is that number when added to another number gives the result 0, and is denoted as the negative of the first number; the additive inverse of the number a is denoted by -(a) and is such that a + -(a) = 0.
eg the additive inverse of 1/2 is -(1/2) giving 1/2 + -(1/2) = 0.
The sum of two rational numbers is rational.From there, it follows that the sum of a finite set of rational numbers is also rational.
Since the sum of two rational numbers is rational, the answer will be the same as for the sum of an irrational and a single rational number. It is always irrational.
They are always rational.
Yes, it is.
Yes, it is.
No, it is always true
Yes.
The sum of two rational numbers is rational.From there, it follows that the sum of a finite set of rational numbers is also rational.
sometimes true (when the rational numbers are the same)
Such a sum is always rational.
Never.
Since the sum of two rational numbers is rational, the answer will be the same as for the sum of an irrational and a single rational number. It is always irrational.
They are always rational.
No - the sum of any two rational numbers is still rational:
Yes, it is.
Yes, it is.
Yes, Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.