With inequalities, you mostly treat them the same as an equality, except when multiplying or dividing both sides by a negative number (that changes the direction of the inequality sign).

In this case, treat x + 3 > 2 the same way you'd treat x + 3 = 2. We want to get all the numbers on one side, and leave the x variable on the other side. First start by subtracting 3 from both sides

x + 3 > 2

x + 3 - 3 > 2 - 3

x > -1

And you're done. The solution here, is that x must be greater than -1.