Which of the following is a linear equation in one variable?
A) 2y + 1 = x - 3
B) 1 - 2m = 5 - 2m
C) 2X - 1 = x²
D) 2z + 3 = 4
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D
As 1st has two variables
2nd is not an equation 3rd is a quadratic
And 4th is only linear eq with one variable as z
As 1st has two variables
2nd is not an equation 3rd is a quadratic
And 4th is only linear eq with one variable as z
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