In this case, you'll have to use a variable. Variables are basically a symbol which stands for a number. Let's use the variable "m". You're searching for 58 less than a number. That is basically just "word form" for a number, or a variable, minus 58. So if we use the variable "m", the expression will be m-58. Remember that you can use any variable you want.
What is the algebraic expression for 5 less than a certain number
5-w=
3n-9
4x - 5
5x - 4
a - 4
What is the algebraic expression for 5 less than a certain number
An algebraic expression for "6 less than 5 and a number" is (5 - x - 6), where x represents the unknown number.
The algebraic expression for "4 less than the sum of a number and 5" is (n + 5) - 4, where n represents the unknown number.
n-3
5-w=
n-9
It could be: 32-x
x - 11
It is: x-5
3n-9
4x - 5