A constant.
bubble
It is to make the variable the subject of the equation.
each of the four regions created on the coordinate plane by the x- and y-axes.
If both sides of an equation are not equal, it won't be an equation any more! In solving equations, the strategy is to change both sides in the same way, so that an 'equivalent' equation is produced. An equivalent equation has the same solution as the original equation. You are aiming for an equation in which the variable is alone on one side. The quantity on the other side is the solution.
isolate the variable
It can be either. If it takes a noun as an object, it is a preposition. It if stands alone or with other adverbs, it is an adverb. It can, rarely, be an adjective.
It is called a constant.
constant
Either called a "term" or a "constant"
In an equation, a number that stands alone is called a constant. It is a fixed value that does not change during the equation or its solution.
The adjective would be the number "one" (which might be called a determiner). The adverb is "alone" modifying the verb stands.
It is to make the variable the subject of the equation.
independent clause
The Winner Stands Alone was created in 2008.
The Winner Stands Alone has 375 pages.
butte
A Butte
The ISBN for "The Winner Stands Alone" by Paulo Coelho is 978-0061750441.