Solve the equation .
Answer and explanation
Correct answer: B.
- Step 1: Add 7 to both sides to get . Step 2. Divide both sides by 3 to get . **Answer: . Why not the others:** comes from subtracting 7 instead of adding it, forgets to divide by 3, and is a sign error.
Practise more Algebra, Functions, Geometry and Probability.
Free questions with an explanation for every one, and full timed Državna Matura (Montenegro) mock tests.