Internet Audience   At the end of a certain year, the four companies with the largest number of home Internet users in the United States were Microsoft, Time Warner, Yahoo, and Google, with a combined audience of 284 million users. Taking x to be the Microsoft audience in millions, y the Time Warner audience in millions, z the Yahoo audience in millions, and u the Google audience in millions, it was observed that           z  −  u  =  3(x − y) + 10           x  +  y  =  46 + z + u and   x  −  y  +  z  −  u  =  38. How large was the audience of each of the four companies at the end of that year? MicrosoftTime WarnerYahooGoogle

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