Solve the Equation: Finding the Triangle's Value in 30 + △ = 38

To solve this problem, we'll follow these steps:

• Step 1: Identify the known numbers in the equation.
• Step 2: Rearrange the equation to solve for the unknown value.
• Step 3: Calculate using basic subtraction.

Now, let's work through each step:
Step 1: The known numbers in the equation are $30$ and $38$. We need to find $\triangle$ in $30 + \triangle = 38$.
Step 2: Rearrange the equation to isolate $\triangle$: $\triangle = 38 - 30$.
Step 3: Calculate the difference: $\triangle = 8$.

Therefore, the value of the triangle is $8$.