Which of the following is a pair of linear equation in two variables?

2x + y = 2; 3x - z=2

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12x + 4y + 3 = 0; 4x + 4y + 4 = 0

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x + 2 = 0; a + 2b = 0

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x + y - 3 = 0; 4a + 2b + c = 24

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Solution

The correct option is B
12x + 4y + 3 = 0; 4x + 4y + 4 = 0

Two linear equations in same two variables are called pair of linear equation in two variables.

12x + 4y + 3 = 0 and 4x + 4y + 4 = 0 are linear equations in same two variables.

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