20-n
X = " a number " X + 20
d
Numerical Expression: 1.) 20+2-8 ( Or any other number with two symbols on math ) Algebraic Expression: 2.) h x 2 ( Or any other number using only one symbol an a letter ) The difference between a numerical and algebraic expressions is that numerical expressions use only numbers, but algebraic expressions use letters as variables to represent numbers.
(x + y)/20
15
Hans earned 20 less than ericka algebraic expression
You have to assign some variable name to "a number", for example, "n". The difference would be: 20 - n Half this difference is: (1/2) (20 - n) Or alternately: (20 - n) / 2
s - 20
It is 2n + 20.
70 - (20 - 13)
Let the number be x and so the expression would be: x+20
It is simply: 5n+20 which is an algebraic expression because it has no equality sign