Well, in order to expand and simplify, you have to remember your properties. The property you would use in those instances would be the distributive property.
Let's start with the first example...
First distribute the 4. That means to multiply the 4 by 2y and then by -3.
Now let's simplify.
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Now for the second example. This time we're going to break up the problem.
Let's start off with .
First distribute the -3. That means to multiply the -3 by 2y and then by -2.
This adds up to .
Now let's move onto .
First distribute the 4.
This adds up to .
Now let's add both together, shall we?
This equals