ExamPrepWay
Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Learn + solve
Solve this faster with the right shortcut first
Shortcut used: Define the variable, form the equation, then solve step by step.
Solve in 3 steps:
- Let the unknown be a variable.
- Translate the statement into an equation.
- Solve and verify in options.
Common mistake: Do not change signs while moving terms across the equation.
Question 4
Multiple Choice Question
Question
If 8x+9=81, find x.
Explanation
Correct Answer: B
ANSWER
Correct Answer: B
Method / Topic: Algebra
The value of x is 9.
Why this answer is correct
The answer satisfies the equation formed from the question.
Short Explanation
The value of x is 9.
Detailed Explanation
Question
If 8x+9=81, find x.
ANSWER
Correct Answer: B
Method / Topic: Algebra
Subtract 9 from both sides to get 8x=72. Divide by 8 to obtain x=9.
Need the full method?
See full explanation + shortcut trick
Compare the quick idea with the premium step-by-step explanation and faster solving trick for this pattern.
Question 4
Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Learn + solve
Shortcut used, common trap, and the fastest solving route
Shortcut used: Define the variable, form the equation, then solve step by step.
Solve in 3 steps:
- Let the unknown be a variable.
- Translate the statement into an equation.
- Solve and verify in options.
Common mistake: Do not change signs while moving terms across the equation.
Question
If 8x+9=81, find x.
Explanation
Correct Answer: B
ANSWER
Correct Answer: B
Method / Topic: Algebra
The value of x is 9.
Why this answer is correct
The answer satisfies the equation formed from the question.
Short Explanation
The value of x is 9.
Detailed Explanation
Question
If 8x+9=81, find x.
ANSWER
Correct Answer: B
Method / Topic: Algebra
Subtract 9 from both sides to get 8x=72. Divide by 8 to obtain x=9.
Locked premium value
See full explanation + shortcut trick
Use the free answer check first, then unlock the complete breakdown, shortcut path, and richer explanations for similar questions.
Keep Practicing This Pattern
Topic Recommendations
Practice Similar Questions
Recommended Next Practice
Use these suggestions after solving the practice questions above.