Calculate (20) / (-4) + (-2) x (-10) - (-2) x (7):

To evaluate the expression step-by-step:

First, handle the division and multiplication as they take precedence over addition and subtraction. Begin with the division:

(20) / (-4) = -5

Next, perform the multiplications:

(-2) x (-10) = 20

(-2) x (7) = -14

Now, substitute these results back into the expression:

-5 + 20 - (-14)

The expression simplifies to:

-5 + 20 + 14

Next, perform the addition:

-5 + 20 = 15

15 + 14 = 29

Thus, the entire expression evaluates to 29. This thorough breakdown showcases how each operation is executed according to the order of operations, confirming that the answer of 29 is indeed correct.