Solve for x in x + 2 = 9.
Understand the Problem
The question is asking to solve for the variable x in the equation x + 2 = 9. To solve it, we need to isolate x by subtracting 2 from both sides of the equation.
Answer
The solution is $x = 7$.
Answer for screen readers
The final answer is $x = 7$.
Steps to Solve
- Isolate the Variable x
To solve for $x$, we need to isolate it on one side of the equation. We do this by subtracting 2 from both sides.
$$ x + 2 - 2 = 9 - 2 $$
- Simplify Both Sides
Now we simplify both sides of the equation.
$$ x = 7 $$
- Final Result
The solution to the equation is now clear:
$$ x = 7 $$
The final answer is $x = 7$.
More Information
This equation is a simple linear equation where we used basic algebra to isolate the variable. It demonstrates the principle of maintaining equality by performing the same operation on both sides of the equation.
Tips
- One common mistake is forgetting to subtract from both sides of the equation. Always perform the same operation on both sides to keep the equality.
- Another mistake is miscalculating the final result. Carefully check your arithmetic when performing the operations.
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