Multiple choice Solve the equation for $x$. $13-2(2x+1)=1$ $\displaystyle -\frac{7}{2}$ $\displaystyle -\frac{5}{2}$ $\displaystyle \frac{9}{4}$ $\displaystyle\frac{5}{2}$ $\displaystyle\frac{7}{2}$ Reveal answer Fill a bubble to check yourself D Correct answer Explanation Expanding the equation: 13 - 4x - 2 = 1. Simplifying gives 11 - 4x = 1, so 4x = 10, which means x = 10/4 = 5/2.