Solve the Addition Expression: Finding the Sum of 19 + 30

To solve this problem, we need to find which expression is equivalent to the equation $19+30$.

Let's first compute the sum:

• Calculate $19 + 30$.
  This gives us $49$.

Next, let's look at the given answer choices and determine which expression results in $49$:

Choice 1: $(20+30-1)$

• Calculate $20 + 30 = 50$.
• Subtract $1$ from $50$: So, $50 - 1 = 49$.
• The expression $20+30-1$ results in $49$.

Therefore, the equivalent expression to $19+30$ is $20+30-1$.