🧮 Algebra Quiz
Make \( u \) the subject of: $$ y = -u + 3 $$
💡 Explanation:
- Start with the given equation: $$ y = -u + 3 $$
- Add u to both sides: $$ y + u = -u + u + 3 $$
- Simplify the right side: $$ y + u = 3 $$
- Subtract y from both sides: $$ y - y + u = 3 - y $$
- Simplify the left side: $$ u = 3 - y $$