no so much as laws, many different properties are used in algebra. the most dominant one is obviously what is known as the golden rule. it states that in an equation, both side of the equation most always be balanced, so if an operation is made to one side of the equation, the same operation must be done to the other
Algebra can be used to solve for an unknown value in Graham's Law formula. The Grahams law formula can use algebra for solving for an unknown value in the formula.
commutative
It is hard to say one law is specifically used "most" in algebra. However, it is amazing just how useful the reflexive property is. Reflexive property: a=a The property states that any number equals itself and is necessary for most other properties.
a=b
It means "location", particularly as used in law, and frequently used when referring to a site for a concert.
Algebra is used for mathematics
'Part' is not a term used in Algebra.
Algebra and Geometry are not related to each other directly, however in higher levels of math (Trigonometry and Calculus) you will use both very frequently
in algebra class, in science, physics, and technology.
Algebra is used repeatedly in scientific fields such as astronomy, computer science, and so on. After all, algebra and science go hand in hand. If one was to research further into this, algebra is also used for basic math. For people who like to shop and find the best deals, algebra is used big time in shopping.
As by "who" i assume you mean what profession. Algebra is used a lot in banking, economics, and doctors who need formulas. But overall algebra is mostly used by college leveled advanced algebra teachers.
In the medical field algebra is used mostly for calculating dosages for medications and in giving the proper amount. Basic algebra is used to also calculate vitals.