Solve for x: 3x + 7 = 22.

  1. 3
  2. 4
  3. 5
  4. 6

Correct answer: C

Subtract 7 from both sides of the equation 3x + 7 = 22 to obtain 3x = 15. Divide both sides by 3 and get x = 5. Checking by substitution confirms the result: 3 multiplied by 5 is 15, and 15 plus 7 equals 22.

Category: Algebra