Let x= -2 y=4, and z=1/2
evaluate z(y-3x)+x

Rambling typically means to make incoherent speech, usually as a fact such as jumping topics at random points with no relations or similarities between the topics.

"The professor rambled on about his life experiences, but what has that got to do with our Algebra class? "

Another form of rambling is when it is used to describe a person wandering about. Usually, it can be used to describe when one goes on a walk or stroll with no direct purpose, or destination to get too.

"My father and I would go on a ramble in the western outback, but with no clear intentions. His eagle-eyes pierced the country-side, as if he was searching for the unknown; But what was the meaning behind his long-tirade walks and disoriented behaviors? "