Answer:
42= 20 +h
Explanation:
Given from the problem statement
Melissa has made 20 zebra-printed hats
and Rachel has made h amount of striped hats
and also the total amounts of hats made by both of them is 42 hats
We can write a simple equation for the scenario as
![42= 20 +h](https://img.qammunity.org/2021/formulas/mathematics/high-school/y0syxa71kzuhyxolnbnlzb13o939px43qt.png)
We can solve the equation to know the amount of hats made by Rachel
![42= 20+h\\\\h= 42-20\\\\h= 22](https://img.qammunity.org/2021/formulas/mathematics/high-school/qjgfc8zaap8gkc52y88vb38pauko63w9m3.png)
Hence Rachel has made 22 hats