Problem 7 - Introductory Algebra for College Students

Question

Find each sum using a number line. $$3+(-3)$$

Step-by-Step Solution

Answer

The sum of 3 and -3 is 0.

Step 1: Represent the first number on the number line

Start at 0 on the number line. Since the first number is positive 3, move 3 units to the right from the number 0.

Step 2: Add the second number using the number line

Now, from position 3 on the number line, since the second number is negative 3, move 3 units to the left on the number line.

Step 3: Locate the final position

Finally, notice where you land. This point on the number line represents the sum of 3 and -3.