Question

Question #c3b3b

Answer 1

Any rational number will satisfy this requirement: 7, 1, -5, 450, .33335332, .93, -6002, 0, 18,000,000,000, and many, many others.

Explanation:

.53 is rational. A rational number added to a rational number always produces a rational number.

Answer 2

See explanation

Explanation:

Quote from Penguin Dictionary of Mathematics.

"A real number that is either an integer or can be written as a quotient of two integers."

So we are talking about:

Whole numbers -> can be expressed using the denominator of 1 `color(white)("ddddddddddddd")7=7/1` so meets the criteria of form `a/b`

Fractions

Decimal that are repeating or terminating`->`can be converted to `color(white)("ddddddddddddddddddddddddddddddddd")`fraction form.
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`0.53` is terminating thus rational `->53/100`

You may choose any other rational number as:

rational number + rational number = rational number