Choose the correct answer for the variable having unique solution — task. Mathematics CBSE, Class 10.

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The system of equations are

$7 x + (m - 7) y + 8 = 0$ and

$3 x + (m + 6) y + 8 = 0$ . Find the value of

$m$ if the system of equations has a unique solution.

The equations have a unique solution for all real numbers except

$m =$

−16
−17
−15
−14

(Note: If the answer is a whole number, mention as it is. If not, round off the answer and submit it as a whole number.)

$1$

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