Same thing to both sides of equations
2:32
Khan AcademySal Khan
Same thing to both sides of equations
In this fun math problem, we have a balanced scale with a mystery mass on one side and several 1-kilogram masses on the other. To find the mystery mass, we remove the same number of 1-kilogram masses from both sides, keeping the scale balanced. Then, we can easily determine the mystery mass's weight.
Apr 27, 2015
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