I don't understand how Red and Blue makes Magenta?

Wave lenghts go this way

Beyond Red, Red, Yellow, Green, Blue, Magenta, Beyond Magenta

Blue is a color that is closer to Red than Magenta is to Red.

Mix of Red and Blue is supposed to have a color between Red and Blue but instead, it gets a color beyond Blue. Why so?

I dont understand how Red and Blue makes Magenta?
I don't understand how Red and Blue makes Magenta?
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