Units and Measurements

Question: If \[{u_1}\] and \[{u_2}\] are the units selected in two systems of measurement and \[{n_1}\] and \[{n_2}\] their numerical values, then



1) \[{n_1}{u_1} = {n_2}{u_2}\]
2) \[{n_1}{u_1} + {n_2}{u_2} = 0\]
3) \[{n_1}{n_2} = {u_1}{u_2}\]
4) \[({n_1} + {u_1}) = ({n_2} + {u_2})\]
Solution: Explanation: explanation
units

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