Question

MARKIN BRAINIEST ANSWER!!!!(btw slide 3 is the answers you might need to solve this)

Answer 1

Answer:

Step-by-step explanation:

I assume you need help with the first picture:

Let $x=\frac{a}{b} \\y=\frac{c}{d}$

Then

$x+y=\frac{a}{b} +\frac{c}{d} =\frac{ad}{bd} +\frac{bc}{bd} =\frac{ad+bc}{bd} , b,d\neq 0$

Clearly you can see that the sum of 2 rational numbers gives a rational number.