Solve for x: x - 9 = 16
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Correct answer to question 135 (Mathematics Knowledge): 25
Method
Add 9 to both sides to undo the subtraction: x = 16 + 9 = 25.
Updated: November 2026
Mathematics Knowledge · Question 135
Pick an answer
Correct!
Not quite. The correct answer is highlighted.
Correct answer to question 135 (Mathematics Knowledge): 25
Add 9 to both sides to undo the subtraction: x = 16 + 9 = 25.
Updated: November 2026