There is a lot of ways but the easiest one to realise is related to pythagoras. The pythagoras law is obvious algebra and makes it very easy to make corners of exactly 90 degrees.
Much work involves working in excel, which often involves algebra
Coding will become more and more important in the future, it contains loads of algebra.
Even cooking and scaling recipes is done through algebra..
All algebra is is generalising a formula/recipe/method using letters so that it will work on any scale you need it at.
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