It looks like you're working with the expression:

$-3 + 3x + 5$

To simplify this expression, combine like terms:

$-3 + 5 = 2$

So, the simplified expression becomes:

$3x + 2$

Is there anything else you'd like to do with this expression, such as solving for $x$ or using it in a different context?

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Here are some follow-up questions:

1. How do you solve for $x$ in an equation like $3x + 2 = 0$?
2. What happens if you set the expression equal to a number, like $3x + 2 = 7$?
3. How would you graph the expression $y = 3x + 2$?
4. What is the slope and y-intercept of the linear equation $y = 3x + 2$?
5. How do you factor expressions similar to $3x + 2$ if they have higher powers?

Tip: Always combine constants and coefficients first when simplifying expressions. It makes solving easier!