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Chapter 2: Problem 50

Simplify the expression. $$-(-4)$$

Short Answer

Expert verified
The simplified expression is equation 4.

Step by step solution

01

Identify the expression

The expression to simplify is equation -(-4).
02

Apply the double negative rule

A double negative means you are subtracting a negative number, which is equivalent to addition. Thus, equation -(-4) is equal to equation 4.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Double Negative Rule
When you see two minus signs next to each other, that's a hint that you need to use the double negative rule. In arithmetic, two negatives make a positive. This might seem tricky at first, but it's actually pretty simple with a bit of practice. Think of it this way: if you're removing something that is already negative, you're essentially adding. For example, oequation -(-4) becomes equation 4.
This rule is extremely helpful in simplifying expressions, so keep practicing until it clicks!
Negative Numbers
Negative numbers can often be confusing, but understanding them is crucial for mastering basic arithmetic. A negative number is any number less than zero, represented with a minus sign, like equation -4. These numbers are found to the left of zero on a number line.
In practical terms, a negative number could represent an opposite direction or a loss. For instance, if you owe someone equation 4 dollars, you could think of it as having equation -4 dollars.
Using negative numbers effectively requires practice, but with time, it will become second nature.
Basic Arithmetic
Arithmetic is the branch of mathematics that deals with numbers and the traditional operations you can perform on them鈥攍ike addition, subtraction, multiplication, and division.
  • Addition is combining numbers to get a larger number.
  • Subtraction is removing one number from another.
  • Multiplication is repeated addition.
  • Division is splitting a number into equal parts.

Simplifying expressions, like understanding equation -(-4), often relies on these basics. Take the time to master them, and you'll find math becoming much easier to handle!

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Most popular questions from this chapter

Translate the English phrase to a mathematical expression. Then simplify. \(-108\) divided by \(-4\)

Perform the indicated operation. $$18(-6)$$

A submarine descended from a depth of \(-528 \mathrm{m}\) to \(-1804 \mathrm{m}\) in a 2 -hr period. What was the average change in depth per hour during this time?

Assume \(a>0\) (this means that \(a\) is positive) and \(b<0\) (this means that \(b\) is negative). Find the sign of each expression. $$b-a$$

Divide the real numbers, if possible. $$(-10) \div(-2)$$
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