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Find the value of x+y from the following...

Find the value of `x+y` from the following equation: `2[(x,5),(7y,-3)]+[(3,-4),(1,2)]=[(7,6), (15,-4)]`

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XII BOARDS PREVIOUS YEAR-BOARD PAPER SOLUTIONS-All Questions
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  3. Find the value of x+y from the following equation: 2[(x,5),(7y,-3)]+[(...

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