Question

Rachel used a number line to add. She started counting at 10 and counted until she was on -4 on the number line. What is the addition expression she completed?

Answer 1

Answer: -14

Explanation:

Let the addition expression that she completed be represented by x.

Since she started counting at 10 and counted until she was on -4 on the number line, this can be represented in an equation as:

10 + x = -4

Collect like terms

x = -4 - 10

x = -14

The addition expression is -14