Solving for blank, trying to help my daughter and I am not quite clear

Hi, Morgan.

It looks like your daughter's math class is learning the distributive property.

It looks like this format:

a(b + c) = a•b + a•c

Here is an example:

3(m + 7) = 3•m + 3•7

I hope this helps you see what to do for your daughter's problem.