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.
58
less than twice Greg's height
N+58
N-58
5-w=
4x - 5
3n-9
5x - 4
7 less than a number is an algebraic expression. Given the number the expression can be evaluated. 7 is less than a number is a statement in the form of an inequality. It is true for some values of the number and not for others.
a - 4
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.
5-w=
x - 11
It is: x-5
It could be: 32-x
n-9
n-3
Let the number be x and so the algebraic expression would be: 3x -5
4x - 5
3n-9