MCQ

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Of the following, the linear equation in one variable $x,$ is:

• A
  $\frac{4}{\text{x}}=\frac{\text{x}}{4}$
• B
  $\frac{1}{\text{x}}+\frac{1}{\text{x - 1}}=1$
• ✓
  $\frac{\text{x}}{2}+\frac{\text{x}}{3}+\frac{1}{4}$
• D
  $\text{x}^2 + \text{2x}+ 3=0 $