Add, each pair of rational numbers, given below, and show that their addition (sum) is also a rational number : (vi) -2 and ⅖
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-2 + 2/5 = -2/1 + 2/5 = (-10+2) / 5 = -8/5
-8/5 is also a rational number as it can be expressed in the form of p/q where p = -8 and q = 5.
This is called closure property of addition for rational numbers.
If a and b are two rational numbers, then a+b is also a rational number.
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