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Question

Which of the following equation(s) is a linear equation in one variable?


  1. 2x + 3y = 10 

  2. 4a + 3b = 6

  3. 2x = 3x + 4

  4. 2x + 4z = 5 


Solution

The correct options are
B

4a + 3b = 6


C

2x = 3x + 4


4a = 6 , is a linear equation in one variable as it has only one variable, a.

2x = 3x + 4 is a linear equation in one variable as it has only one variable, x. 

The other equations are linear but have two variables.

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