hi im 33 years old and i have decided to go back and get my ged i don't understand order of operations
(3+6).(5+4)divided by 3-7
i just started my ged classes lastnight can you help me ?
http://www.mathsisfun.com/operation-order-pemdas.html
Of course, I can help you understand the order of operations! The order of operations is a rule that tells us which calculations to do first when solving a math problem with multiple operations. It is also known as the "PEMDAS" rule, which stands for Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right). Following this rule ensures that we get the correct answer.
Let's use the order of operations to solve the expression you provided: (3+6).(5+4) / (3-7).
1. First, we solve the expressions within parentheses: (3+6) and (5+4).
- (3+6) equals 9.
- (5+4) equals 9.
So, now our expression becomes 9.9 / (3-7).
2. Next, we deal with the multiplication and division from left to right.
- There is a multiplication symbol (.) between 9 and 9. So, 9.9 equals 81.
3. Finally, we evaluate the subtraction: (3-7) equals -4.
Now, our expression is 81 / (-4).
To divide a number by a negative number, we simply divide the absolute values, and then apply the negative sign to the result. So, 81 / (-4) is equal to -20.25.
Therefore, the final solution to the expression is -20.25.
Remember, the key to understanding the order of operations is to follow the PEMDAS rule: Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right). Take your time and practice applying this rule to various math problems.