Answer:
57
Step-by-step explanation:
Step 1: Solve within the innermost parentheses 24+15-9(3)+6(4)+7 = 39 - 9(3) + 6(4) + 7
Step 2: Solve the multiplication within the parentheses = 39 - 27 + 24 + 7 = 39 - 27 + 31 = 43
Step 3: Substitute back into the original expression 100 - 43 = 57
So, the answer is 57.
