Subtracting a negative from a negative, -4 - (-4)

The video tutorial explains how to subtract a negative number from another negative number. It begins with an example problem, demonstrating how to convert the subtraction into an addition problem by adding the opposite. The solution is further illustrated using a number line, showing that subtracting a negative is equivalent to moving in the positive direction, ultimately resulting in zero. The tutorial concludes with a summary of the example.

What is the result of subtracting -4 from -4?

• 4

• -8

• 8

• 0

How can you change a subtraction problem involving negative numbers into an addition problem?

• By adding the opposite

• By multiplying by zero

• By subtracting the opposite

• By dividing by one

What is the result of -4 plus 4?

• 0

• 8

• 4

• -8

On a number line, if you move four units in the positive direction and then four units in the negative direction, where do you end up?

• At zero

• At four

• At negative four

• At eight

Why does subtracting a negative number from another negative number result in zero?

• Because the numbers are divided

• Because the numbers are multiplied

• Because subtraction always results in zero

• Because the negatives cancel each other out