Question

If it takes 3127 feet of computer cable to wire an office building how much cable will left if the wire is taken from a 5000 foot reel

Answer 1

This is simple to solve as all we need to do is setup a basic equation. An equation that could represent this is $3127+x=5000$ where x is equal to the amount of wire left on the reel.

$3127+x=5000$
$-3127$  $-3127$
$x=1873$

Using this information, we can see that there are 1,873 feet of wire left on the reel.