Question

72:(12*3)*450-400*(82-68):70

Answer 1

1)12×3=36
2)72:36=2
3)2*450=900
4)82-68=14
5)400*14=5600
6)5600:70=80
7)900-80=820

Answer 2

To solve the expression, follow the order of operations (PEMDAS/BODMAS):

1. Parentheses/Brackets
2. Exponents/Orders
3. Multiplication and Division (from left to right)
4. Addition and Subtraction (from left to right)

Let's break down the expression step by step:

Step 1: Solve within the parentheses. 12 * 3 = 36

Step 2: Simplify within the second set of parentheses. 82 - 68 = 14

Step 3: Continue solving multiplication and subtraction. 72: 36 * 450 - 400 * 14: 70

Step 4: Perform multiplication. 72: 36 * 450 = 72: 16200

400 * 14 = 5600

The expression now becomes: 72: 16200 - 5600: 70

Step 5: Perform division. 72 ÷ 16200 ≈ 0.00444444 (rounded to 8 decimal places)

5600 ÷ 70 = 80

The expression is now: 0.00444444 - 80

Step 6: Perform subtraction. 0.00444444 - 80 ≈ -79.99555556 (rounded to 8 decimal places)

So, the result of the expression is approximately -79.99555556.