To solve the quadratic equation x+121=9, we can first simplify it:

Question

1. Start with the equation:
$$\frac{x+12}{1}=9$$

2. Multiply both sides by 1 (which doesn't change the equation):
$$x+12=9$$

3. Now, isolate $x$ by subtracting 12 from both sides:
$$x=9-12$$
$$x=-3$$

So the solution to the equation is:
$$\boxed{{\displaystyle -3}}$$
make this like a 6th grader wrote it

Answer 1

To solve the equation $\frac{x+12}{1}=9$, let’s break it down step by step:

1. We start with the equation: $$\frac{x+12}{1}=9$$

2. Since dividing by 1 doesn’t really change anything, we can just write: $$x+12=9$$

3. Now, we want to find out what $x$ is. To do that, we need to get $x$ all by itself. So, we can subtract 12 from both sides. It looks like this: $$x+12-12=9-12$$

4. This simplifies down to: $$x=9-12$$

5. Now we do the math on the right side: $$9-12=-3$$

So, the answer we find for $x$ is: $$x=-3$$

That means the solution to our equation is: $$\boxed{{\displaystyle -3}}$$