The equation in the image appears to be:

$x + 15 + 3 = 10 + 25$

Let’s simplify it step by step.

1. Combine terms on each side of the equation: $x + 18 = 35$

2. Subtract 18 from both sides to solve for $x$: $x = 35 - 18$

3. Simplify the result: $x = 17$

So, the solution is $x = 17$.

Would you like more details on the steps involved, or do you have any other questions?

Here are some related questions you might find helpful:

1. What if the equation included variables on both sides?
2. How would you solve an equation with more complex terms or exponents?
3. Can you solve equations involving fractions or decimals similarly?
4. What if the equation had parentheses or required distribution?
5. How can you check if your solution to an equation is correct?

Tip: Always double-check your work by substituting your solution back into the original equation to verify it holds true.