Find the value of the expression (3 + 4) × 2 - 1.

To evaluate the expression (3 + 4) × 2 - 1, we need to follow the order of operations, often referred to as PEMDAS (Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)).

First, we look for parentheses in the expression. Here, we have (3 + 4). We perform the operation inside the parentheses first:

3 + 4 = 7.

Next, we substitute this value back into the expression to get:

7 × 2 - 1.

Next, we perform the multiplication:

7 × 2 = 14.

Now, our expression is simplified to:

14 - 1.

Finally, we carry out the subtraction:

14 - 1 = 13.

Thus, the value of the expression is 13. This indicates that when simplified correctly using the order of operations, we arrive at the right answer.