6x - 5y = 27; 5x - 6y= 28
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On solving by elimination method :
6x - 5y = 27 ... (1) × 5
5x - 6y = 28 ... (2) × 6
30x - 25y = 135
30x - 36y = 168
(-) (+) (-)
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On subtracting :
11y = -33
y = -3
On putting the value of y in equation (1) :
6x - 5(-3) = 27
=> 6x = 27-15
=> 6x = 12
=> x = 2
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