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Question

One equation of a pair of dependent linear equations is −5x+7y=2, the second
equation can be :

A
10x+14y+4=0
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B
10x14y+4=0
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C
10x+14y+4=0
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D
10x14y=4
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Solution

The correct option is A 10x14y=4
10x14y=4
For a pair of dependent linear equations, the both equations must satisfies the condition-
a1a2=b1b2=c1c2
Since the equation 10x14y=4 satisfies the above condition, hence the second equation is 10x14y=4.

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