What value of is the solution to the given equation?
Explanation
Context: We must find the value of that is the solution to the equation .
Answer: A)
Why: The variable is multiplied by , so undo that by dividing both sides by : . Check: , so the solution is correct.
Traps:
- B) subtracts instead of dividing: ; subtraction only undoes addition.
- C) adds instead of dividing: ; adding cannot undo multiplication.
- D) multiplies both numbers: , applying multiplication a second time instead of undoing it.