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प्रश्न
If the point (2, -2) lies on the graph of the linear equation 5x + ky = 4, find the value of k.
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उत्तर
It is given that ( 2, 2 ) is a solution of the equation 5x + ky = 4
∴ 5 × 2 + k × ( -2 ) = 4
⇒ 10 - 2k = 4
⇒ - 2 k = 4 - 10
⇒ -2k = - 6
⇒ k = 3 .
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