Question

prove that if a and b are rational numbers then a + b is a rational number

Answer 1

coconut shake???

Answer 2

*Bookmark* ...I wanna see the Proof.

Answer 3

\[a = \frac{m}{n}\]
\[b = \frac{p}{q}\]
\[\rightarrow a+b = \frac{m}{n}+\frac{p}{q} = \frac{mq+pn}{nq} = \frac{j}{k}\]
where m,n,p,q,j,k are all integers
therefore a+b is rational