Answer:
is the equation of this situation.
Explanation:
The question is incomplete so, the complete question is below:
Melissa and Rachel like to make funny hats. Melissa has made 20 zebra-printed hats, and Rachel has made h striped hats. Together they have made a total of 42 hats. Write an equation to describe this situation.
Now, to write an equation of the situation:
Let the number of hats made by Rachael be

The number of zebra-printed hats made by Melissa = 20.
Total number of hats both of them have made together = 42.
Now, to write an equation describing the situation:

Therefore,
is the equation of this situation.