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If 3x + 5y = 9 and 5x + 3y = 7, then what is the value of x + y? |
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Answer» ong>Answer: Step-by-step explanation: 3x + 5Y = 9———(i) 5X + 3y = 7———(ii) adding eq (i) and (ii), 3x + 5y + 5x + 3y = 9+7 8x + 8y = 16 8 ( x + y ) = 16 x + y = 16 2 x + y = 2. |
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