+0

# Can I get some help on a problem?

0
36
1

In this problem, $$a$$, $$b$$, $$c$$, and $$d$$, are nonzero integers If  $${{a} \over b}$$ is added to $$x$$, the sum is  $${{c} \over d}$$. Which statement can be used to prove that  $$x$$ must be a rational number?

a)  $$x = {{c-a} \over d-b}$$

b)  $$x = {{c+a} \over d-b}$$

c)  $$x = {{cb-ad} \over bd}$$

d)  $$x = {{cb+ad} \over bd}$$

May 1, 2021

#1
+118504
+2

x +  a/b =  c/d

x =  c/d -  a/b

x = ( cb  -  ad) /  ( bd)

May 1, 2021