Question

Hi I really need help with a and b. thank you

Answer 1

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

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

$\frac{27}{45}$ = $\frac{3}{5}$

b) To solve this equation, you would need to fill in the blank with a substitute. Let x represent the unknown number. 
$\frac{2}{6}$ = $\frac{3}{x}$
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

$\frac{2}{6}$ =$\frac{3}{9}$

I hope this helps!