To evaluate an algebraic expression means to find the value of the expression when the variable is replaced by a given number. To evaluate an expression, we substitute the given number for the variable in the expression and then simplify the expression using the order of operations.
An expression is a sentence with a minimum of two numbers and at least one math operation.
How do you write a VARIABLE EXPRESSION?
10 and a Number
10 + N
In the above case or situation the word expression is ten ( 10 ) and a number ( N )
If we add or substitute in place of N any number the word expression would hold true
What is a variable?
A defining variable is a symbol, such as x, used to describe any number. When a variable is used in an function, we know that it is not just one constant number, but that it can represent many numbers. ... A variable is a letter or a symbol used to represent any number.
MATHEMATICS IS NUMBERS, LETTERS AKA SYMBOLS, AND OR OTHER.
WE SOLVE PROBLEMS FROM LEFT TO RIGHT MOST OF TIME
I GUESS FIRST THINGS FIRST AND SO ON
In math we also tend to use some ORDER OF OPERATIONS.
Evaluate -2x 2 y, if x = -3 and y = -1.
X is equals to -3
Y is equal to -1
What are the steps to EVAUATE AN EXPRESSION