185 is the sum of the first part if the question
Answer:
P(A and B) = P(AnB)
Step-by-step explanation:

For this case we must simplify the following expression:

We apply distributive property on the left side of the equation:

We subtract 3n from both sides of the equation:

We subtract 6 from both sides of the equation:

We divide between 45 on both sides of the equation:

Answer:

In finding the sum of 2+5 you would go right on the number line, while in finding the sum of -2+(-5) you would go left on the number line