BECE Mathematics 2021 Paper

Concept:Solve a one-variable linear equation by using inverse operations to isolate $x$.Explanation:Start with the equation:$2x - 1 = 5$.Add $1$ to both sides so the constant disappears from the left side:$2x = 5 + 1$.Thus, $2x = 6$.Now divide both sides by $2$:$\frac{2x}{2} = \frac{6}{2}$.This gives $x = 3$.Remember: when a negative number crosses the equals sign, it becomes positive. So $-1$ becomes $+1$ on the other side.Answer:$x = 3$, which is option A.