Algebra practice question

Answer: 36

Multiply by 12: 4x − 24 = 3x + 12, so x = 36.

Common wrong answers

If you answered 3

3 solves x/12 = 1/4, a slip.

If you answered 12

12 uses x/3 − x/4 = 1 with a slip.

If you answered -12

−12 subtracts the constants the wrong way.

More Algebra questions

• Hard
  For how many integer values of x is −2 < (x − 5)/3 ≤ 1 true?
• Hard
  The system 2x + 3y = 6 and 4x + 6y = k has infinitely many solutions. What is the value of k?
• Hard
  Which of the following is the complete solution set to |x − 4| < 6?
• Hard
  A student has $40 to spend on notebooks costing $4 each and pens costing $2 each, and wants at least 12 items …
• Hard
  What is the least whole number of minutes of international calling in a month for which the total monthly cost…
• Hard
  How many liters of the 30% acid solution did the technician use?