Question

Please help with these two I understand the plugging in part but I don’t understand the steps to get to the answer sorry

Answer 1

2. 5

3. 302

Explanation:

2. -8/(4)+7

-8/4 = -2

(-2)+7

5

3. 2-5(3-7(9))

(3-7(9)) = -60

2-5 = 2+(-5)

2 + (-5)(-60)

2+(300)

302