Brilliant.org introduction and first exercise (Finding unknowns)

Описание: My first educational YouTube video is out now!
Today I've done my first exercise on Brilliant.org, solving basic algebraic calculations.
Brilliant.org is free-to-access online course (plus Premium mode, which offers unlimited access) with lots of subjects from different areas, ranging from Maths to Computer Science, and many more.
Don't forget to subscribe my channel for more related videos as well!

Video timestamps
0:00 Introduction
0:37 Solving equations
0:50 Problem 1: What is the weight of one square?
1:09 Problem 2: What is the weight of one circle?
1:27 Problem 3: What is the weight of one triangle?
2:14 Extended streak + Premium offer (unwanted)
2:30 Conclusion