2x+3y = 9
5x + 7y =11
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2x + 3y = 9..........(i) ×5
5x + 7y = 11...........(ii) × 2
10x + 15y = 45
10x + 14y = 22
(-) (-) (-)
-----------------------------
y = 23
Therefore,
2x + 3y = 9
=> 2x + 69 = 9
=> 2x = 60
=> x = 30
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