3x + 5y = 9 and 5x + 3y = 7, then value of x + y is __________
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Answered by
5
Answer:
The correct answer is x+y=2
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2
Answer:
3x+5y=9
5x+3y=7
adding, (3x+5x)+(5y+3y)=9+7
=> 8x+8y=16
=> 8(x+y)=16
=> x+y=16/8=2
=> x+y=2
the value of x+y=2
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