Multiple choice

Solve the equation for $x$. $13-2(2x+1)=1$

  1. $\displaystyle -\frac{7}{2}$
  2. $\displaystyle -\frac{5}{2}$
  3. $\displaystyle \frac{9}{4}$
  4. $\displaystyle\frac{5}{2}$
  5. $\displaystyle\frac{7}{2}$
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.