Respuesta :

a) To solve this equation, you would need to fill in the blank with a substitute. Let x represent the unknown number. 
[tex] \frac{27}{45} [/tex] = [tex] \frac{x}{5} [/tex]

Next, you would cross multiply. 
135 = 45x

Now, the last step would be to isolate the x. To do this, you would divide both sides by 45. 
3 = x

[tex] \frac{27}{45} [/tex] = [tex] \frac{3}{5} [/tex]

b) To solve this equation, you would need to fill in the blank with a substitute. Let x represent the unknown number. 
[tex] \frac{2}{6} [/tex] = [tex] \frac{3}{x} [/tex]
Next, you would cross multiply. 
18 = 2x

Now, the last step would be to isolate the x. To do this, you would divide both sides by 2. 
9 = x

[tex] \frac{2}{6} [/tex] =[tex] \frac{3}{9} [/tex]

I hope this helps!