SOLUTION:
Case: Checking the validity of simple equations
Given:
- 2x - 3 + 5x = 12
Required:
Check if the equation a true statement when x = 5?
Method:
Step 1: Rewrite the equation
- 2x - 3 + 5x = 12
Step 2: Plug the value x=5
- 2x - 3 + 5x = 12
- 2(5) - 3 + 5(5) = 12
-10 - 3 +25 = 12
LHS = RHS
12 is equal to 12
LHS: Left Hand Side
RHS: Right Hand Side
Final answer:
A. Yes, 5 is a solution.