What is the result of (20 / -4) + (-2 x -10) - (-2 x 7)?

To find the result of the expression (20 / -4) + (-2 x -10) - (-2 x 7), we start by breaking it down step by step.

First, we evaluate the division: 20 / -4 = -5.

Next, we compute the first multiplication: -2 x -10 = 20. Multiplying two negative numbers gives a positive result.

Now we calculate the second multiplication: -2 x 7 = -14. Here, multiplying a negative number by a positive number results in a negative number.

Now we can combine all the calculated parts into the original expression: So, we have: -5 + 20 - (-14).

When we subtract a negative, it is equivalent to adding the positive, therefore: -5 + 20 + 14.

Now we perform the addition: -5 + 20 = 15, and then adding 14 gives us: 15 + 14 = 29.

Thus, the final result of the expression is 29, which corresponds to the first choice. This calculation clearly shows the importance of correctly following order of operations and understanding how signs affect the results when performing arithmetic operations.