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Mathematics, 30.10.2020 07:40 Irvin2284

I need answer soon! If 70 + m + n - 20 = 80 and m = 2n, then what is the value of n?

It'd be great if there was an explanation, but I'm not too picky...

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I need answer soon! If 70 + m + n - 20 = 80 and m = 2n, then what is the value of n?

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