To represent the total cost of a slice of pizza and a drink, you can write the equation:
\[ x + 3.19 = 5.61 \]
Now, let's solve for \(x\):
- Subtract \(3.19\) from both sides of the equation:
\[ x = 5.61 - 3.19 \]
- Calculate the right side:
\[ x = 2.42 \]
So, the cost of the drink is:
\[ x = 2.42 \]