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Linear Equation in 2 Variables

If we write ...

Question

If we write $3 x - 7 y = 10$ in form of $a x + b y + c = 0,$ then $b =$ ?

3

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7

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- 7

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10

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Solution

The correct option is D $- 7$
$3 x - 7 y = 10$ can be written as $3 x - 7 y - 10 = 0$
Now comparing this with $a x + b y + c = 0$ we get,
$a = 3, b = - 7, c = - 10$

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