91Ó°ÊÓ

When working with arithmetic expressions, it's important to follow the order of operations. This ensures that everyone solves the expression the same way and gets the same result. In arithmetic, the commonly accepted order is:
1. Parentheses
2. Exponents
3. Multiplication and Division (from left to right)
4. Addition and Subtraction (from left to right)

In our case with the expression 8 - 3 - 7, we don't have any parentheses, exponents, or multiplication and division. Therefore, we only focus on the subtraction, moving from left to right. This is why the expression is simplified in two steps.

Subtraction is one of the four basic operations in arithmetic, along with addition, multiplication, and division. It represents the operation of removing objects from a collection. For the expression 8 - 3 - 7, we perform subtraction twice:

1. First, we subtract 3 from 8: l. 8 - 3 = 5.

2. Next, we take the result, which is 5, and subtract 7 from it: . 5 - 7. This can be tricky because the second number (7) is larger than the first number (5). When this happens we need to use negative numbers, which leads us to the final result: -2.

Remember, subtracting a larger number from a smaller number will always result in a negative number.

Negative numbers are numbers less than zero. They are shown with a minus sign (-). In the real world, negative numbers can represent debts, temperatures below freezing, or elevations below sea level.

In arithmetic, if you subtract a larger number from a smaller number, like 7 from 5, you end up with a negative number. When solving the expression 5 - 7 in the problem above, the result is -2.

Understanding negative numbers is crucial in arithmetic. They help explain situations where you go below zero, helping to balance equations and solve real-world problems.

To avoid confusion, always remember that moving to the left on a number line results in a smaller or more negative value.