Question

Jonathan and Laura are three miles apart and are traveling towards each other. If Jonathan travels m miles, write an expression to represent how far Laura has traveled when they meet each other.

Answer 1

The sum of the number of miles that should be traveled by Jonathan and Laura to total 3 miles together should be expressed as,
                                  m + x = 3
By subtracting m from both sides of the equation, we get
                                        x = 3 - m
Now, we see that the expression for the distance that Laura traveled is,
                                         3 - m