Mathematics, 26.08.2019 16:10 dorafacegirl
If a is the average (arithmetic mean) of 4x and 7, b is the average of 5x and 6, and c is the average of 3x and 11, what is the average of a, b, and c, in terms of x?
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If a is the average (arithmetic mean) of 4x and 7, b is the average of 5x and 6, and c is the averag...
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