This means that -1 and 1 would be seen as a common coefficient. In examples like this, one or both equations must be multiplied to create a common coefficient. \(\begin{array}{rrrrr} 3a & + & 2b ...

This means that -1 and 1 would be seen as a common coefficient. In examples like this, one or both equations must be multiplied to create a common coefficient. \(\begin{array}{rrrrr} 3a & + & 2b ...

A lot of projects require linear motion, but not all of them require high-accuracy linear slides and expensive ball screws. When just a little shove for a door or the ability to pop something up ...