Question

Solution of equation $3\mathrm{x}-1=5$ is:

• A. $\mathrm{x}=1$
• B. $\mathrm{x}=2$
• C. $\mathrm{x}=3$
• D. $\mathrm{x}=4$

Answer 1

The correct option is C

$\mathrm{x}=3$

Justification Of Answer:

To solve $3\mathrm{x}-1=5$

⇒ $3\mathrm{x}=5+1$ (binary operation is reversed when the number /variable is transferred to the other side)

⇒ $3\mathrm{x}=6$

or $\mathrm{x}=\frac{6}{3}$

$\mathrm{x}=2$

Thus, Option C is the correct answer