Which of the following expression is an algebraic expression in one variable?

7 - 5

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\frac{6 x}{3 x}

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6 x - 2 - 5 x + 3 - x

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x

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Solution

The correct option is D $x$
A value that can change depending on conditions is called a variable.
7 - 5 = 2, a constant.
$\frac{6 x}{3 x} = 2,$ a constant.
$6 x - 2 - 5 x + 3 - x = 1,$ is a constant.
$x$ is a variable.

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