Answer:
there are 30 dolls in total
Step-by-step explanation:
Since 20% = 6 dolls ur gonna multiply that by 5 which gets 100% = 30
First example:
Subtract the 8n on both sides to get the variable on one side of the equation. Do the same for the regular numbers. Then divide by -3.

This should be your final answer.
Second Example:
Do the same thing as explained in Example 1. Here's some work to help guide you.

That should be your final answer here.
Third Example:

Hope this helps and its understandable! Let me know if you still don't understand.
Add up all the numbers then divide how many ever digits there are
Hello, we know there are 12 inches in one foot, so in 12 feet, there are 144 inches.