Hey there!
7 < 5x + 2 < 22
Let's start by adding -2 to both sides
7 - 2 < 5x + 2 - 2 < 22 - 2
5 < 5x < 20
Then divide each part by 5 :)
5/5 < 5x < 20/5
1 < x < 4
I hope this helps. Please let me know if you have questions about the answer.
Down bellow is the graph.
Best of luck with your studies!