What is Algebra?
Algebra is a branch of mathematics that uses symbols and
letters in formulas and equations. These symbols and letters are also
called variables that represent numbers or quantities. In school
systems, algebra is considered a higher level of mathematics and is
usually taught in secondary schools. Algebra follows several important
axioms or guiding principles, as well as the order of operations.
What Are the Different Axioms of Algebra?
Algebra has five basic axioms or principles, which are the
reflexive, symmetric, transitive, additive, and multiplicative axioms.
The reflexive axiom states that any number is equal to itself. For
example, "a" equals "a," or "1" equals "1." The symmetric axiom states
that expressions around the equal sign are symmetrical to each other,
such that if "x" equals "y," then "y" equals "x." An expression is a
group of terms; a term may be a single variable, or a single number
called a constant, or a variable multiplied by a number called a
coefficient. The transitive axiom is best expressed as, if "x" equals
"y" and "y" equals "z," then "x" equals "z." For the additive axiom, if
there are two sets of quantities that are equal and both are added with
equal number or quantity, they will remain to be equal. For example, if
"a" equals "b" and "x" equals "y," then "a" plus "x" equals "b" plus
"y." Lastly, the multiplicative axiom can be expressed as, if a equals
"b" and "x" equals "y," then, "ax" equals "by."
What is the Order of Operations in Algebra?
The order of operations in algebra refers to the order on which
mathematical operations should be computed first when solving problems
that involve two or more mathematical operations. The first operations
to solve are those within a set of parentheses or other grouping symbols
such as brackets. If there are grouping symbols within grouping
symbols, work on the innermost group of expression first. When doing any
operation, do it in order from left to right, and following the rule of
"multiplication then division, followed by addition and subtraction."
How to Do Algebra?
By applying the different axioms and order of operations in
algebra, it is easier to know how to do algebra. In algebra, there are
algebraic equations where one or more terms are often represented by a
letter that is not known. For example: "1" plus "x" equals "5," where
"x" is the unknown figure. To solve this, you can apply the additive
axiom to come up with a solution: "1" plus "x" minus "1" equals "5"
minus "1," which will eliminate "1" and give you the solution of "x"
equals "4." You can check your answer by substituting "4" for the "x" in
the original equation: "1" plus "4" equals "5." This same principle
applies when subtracting, multiplying, and dividing integers in algebra.
However, two or more axioms may apply as the equation becomes more
complex.
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