Answer:
[tex]\huge\boxed{\texttt{The number is 27.}}[/tex]
Step-by-step explanation:
In order to find the number we need to set up an equation where we represent the unknown number as a variable. I'll call it [tex]n[/tex].
5 times a number can be represented as [tex]5n[/tex].
18 more than that can be represented as [tex]5n+18[/tex].
We know it equals 153, so [tex]5n+18=153[/tex].
We can solve for n by reversing the equation until we have n isolated on one side.
Subtract 18 from both sides:
[tex]5n=135[/tex]
Divide both sides by 5:
[tex]n = 27[/tex]
So our unknown number is 27.
Hope this helped!