Assignment:
Q1. Solve x - 3 = -7
Q2. Solve x - 5 = 25
Q3. Using the addition principle solve 15 = n - 2. Be sure to check.
Q4. Solve using the multiplication principle. Be sure to check.
-3x = 36
Q5. Solve -5x + 10 = 40. Be sure to check.
Q6. Add (3x + 4) + (-4x + 8). Simplify the answer.
Q7. Add (x3 - 1) + (x3 + 1). Simplify the answer.
Q8. Add (9 + 7x + 5x2 + 6x3) + (5 - 7x + 5x2 - 6x3). Simplify the answer.
Q9. Simplify -(4x - 3)
Q10. Subtract (6x + 2) - (-4x + 7). Simplify the answer.
Provide complete and step by step solution for the question and show calculations and use formulas.