In the great land of Knowledge, in the famous city of Mathematics, on Notebook Street there lived mathematical signs: Plus, Minus and the Equals sign.
They lived together harmoniously, but whenever the opportunity arose, they couldn't help but argue about who was the most important.
One evening Plus and Minus were sitting at a table, solving problems. Nothing seemed to herald trouble.
Suddenly Plus said:
I have two lines, so I'm bigger and more important, and all you can do is take everything away from everyone! Minus is just a dash, nothing more!
Minus was stung by these words, he felt deeply hurt and left, going wherever his feet would take him.
The next morning the city experienced a real catastrophe. Plus, as usual, came to work, but there was complete chaos. The answers in the examples didn't match at all, numbers were growing at a frantic pace. Division came to help, but even he couldn't manage to fix everything.
The Equals sign stood to one side, observing the disorder unfolding. He was a wise sign and always made the right decisions.
It's unclear how this could have ended, but Equals said:
You are both important and necessary signs!
Plus, quickly find Minus, we need to fix this immediately.
Plus found Minus and asked for forgiveness.
Together they returned to the city of Mathematics, approached the wise Equals sign and stood on either side of him.
And Equals said:
All signs are equally important and equal to me, I will always find a place for each of you in my heart. Promise me you will never quarrel again!
From that day on, love, understanding and mutual support settled in the city.