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anonymous
 5 years ago
what is the answer to the following equation? 3x4y=3 and 4y=x9
anonymous
 5 years ago
what is the answer to the following equation? 3x4y=3 and 4y=x9

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bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.03x  4y = 3 4y = x  9 < You know that 4y is x  9 plug that into the equation above

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.03x  ( x  9 ) = 3 3x  x + 9 = 3 2x + 9 = 3; 2x = 3  9; 2x = 6

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0x = 6 / 2 = 3. Now you know that x = 3, so plug that into: 4y = x  9 4y = 3  9 4y = 12 y = 3
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