How do you show the work for this problems?
(7x9)-3x6+7
8-18x2 divided by 9+5
4 divided by 2x2+7-4
More parentheses are needed to clarify the order of operation. If you were given the problems in that form, your teacher should be replaced
To show the work for these problems, you need to follow the order of operations, which is also known as PEMDAS. PEMDAS stands for Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right). Let me walk you through how to solve each of these problems step by step.
Problem 1: (7x9)-3x6+7
Step 1: Start by calculating the multiplication within parentheses.
(7x9) = 63
Step 2: Multiply the remaining numbers not inside parentheses.
63 - 3x6 + 7
Step 3: Calculate the multiplication.
3x6 = 18
Step 4: Continue with the addition and subtraction.
63 - 18 + 7
Step 5: Perform the remaining addition and subtraction operations.
63 - 18 = 45
45 + 7 = 52
Therefore, the solution to the problem is 52.
Problem 2: 8-18x2 divided by 9+5
Step 1: Start with the multiplication/division operations, from left to right.
18x2 = 36
Step 2: Perform the addition/subtraction operations, from left to right.
8 - 36 divided by 9 + 5
Step 3: Perform the division.
36 divided by 9 = 4
Step 4: Continue with the addition and subtraction.
8 - 4 + 5
Step 5: Perform the remaining addition and subtraction.
8 - 4 = 4
4 + 5 = 9
Therefore, the solution to the problem is 9.
Problem 3: 4 divided by 2x2+7-4
Step 1: Start with the multiplication/division operations, from left to right.
2x2 = 4
Step 2: Perform the addition/subtraction operations, from left to right.
4 divided by 4 + 7 - 4
Step 3: Perform the division.
4 divided by 4 = 1
Step 4: Continue with the addition and subtraction.
1 + 7 - 4
Step 5: Perform the remaining addition and subtraction.
1 + 7 = 8
8 - 4 = 4
Therefore, the solution to the problem is 4.
By following these steps and using the order of operations, you can show your work for these problems.