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What to Do - Part 2

This one's a little harder:
 

Solve        (2/5)x = 4

There are two ways to attack this guy:

WAY 1:

Do a little at a time...  First, undo the 5:

5 * (2/5)x = 4 * 5 which gives 2x = 20

Now, undo the 2:

2x / 2 = 20 / 2 which gives x = 10

WAY 2:

Use your knowledge of fractions and multiplicative inverses:

(5/2) * (2/5)x = 4 * (5/2) which gives (10/10)x = (4/1) * (5/2) which gives x = 20/2 which gives x = 10

YOUR TURN:

Solve          (7/3)x = 14          *Both ways... and check it!

Here's the second thing we can do:

We can multiply or divide both sides of an equation by a number!