(adsbygoogle = window.adsbygoogle || []).push({}); 1. Letaandbbe rational numbers. Prove or provide counterexample that

A)a+bis a rational number.

B) Isabnecessarily a rational number?

2. How can you prove that the sume of two rational number is rational? Well I am not really good at math

3. This is what I've tryed to do for part a. But I'm stuck proving the sum (product) of two integer is an integer.

Sinceaandbare rational numbers they can be written asa=x/yandb=w/zwherex,y,w,zare all integers. Thena+b= x/y+w/z = (xz+wy)/(yz)

Now I'm stuck, and I have no clue how to do part B...

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# Homework Help: Proving that sum of Rational #s is Rational

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