CLEAN : Polls close in Tunisia presidential election

The video tutorial begins with an introduction to the concept of subtraction, explaining its basic principles. It then concludes with a prompt encouraging viewers to subscribe to the channel for more educational content.

What is the main focus of the introduction section?

• Providing a summary

• Discussing the main topic

• Answering questions

• Encouraging subscriptions

What action is the speaker encouraging in the second section?

• Liking the video

• Subscribing to the channel

• Sharing the video

• Commenting on the video