MCQ
Which of the following is an equation?
  • A
    $x + 1$
  • B
    $x - 1$
  • $x - 1 = 0$
  • D
    $x + 1 > 0$

Answer

Correct option: C.
$x - 1 = 0$

We know that, an expression with a variable, constants and the sign of equality $(=)$ is called an equation.
So, $x - 1 = 0$ is an equation.
Hence, $(c)$ is correct option.

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