Answer and explanation

Correct answer: D. (subtract 5, then divide by 3)

  1. Step 1: Subtract 5 from both sides: . Step 2. Divide both sides by 3: . **Answer: . Why not the others:** Each other value comes from adding 5, skipping the division by 3 or rounding too early.

Practise more Problem Solving in Mathematics.

Free questions with an explanation for every one, and full timed ENLA Secondary Practice (Peru) mock tests.