Question

Solve for the variable in 7⁄28 = 25⁄x

Answer 1

Simple,

to figure this out, first, cross multiply,

$\frac{7}{28} = \frac{25}{x}$

7*x=7x
and
28*25=700

Which leaves you 7x=700

Now, divide...

$\frac{7x}{7} = \frac{700}{7}$

x=100

Thus, your answer.

Answer 2

Well, I would do cross multiplication for this problem
 7       25
----    -----
28       x

You would get this equation,
7x = 700

Then, solve that by using division
7x = 700
---   -------
7        7

700 / 7 = 100

Hope this helps