Answer:
27 years old
Step-by-step explanation:
We can represent Mr. Edwin's current age with the variable [tex]x[/tex]. Using this variable, we can show the given information in an equation.
The two values given to be equal are:
Putting this into equation form, we can solve for x:
[tex]2 \cdot (x - 9) = x + 9[/tex]
↓ applying the distributive property ... [tex]a \cdot (b+c) = (a\cdot b) + (a \cdot c)[/tex]
[tex]2x - (2 \cdot 9) = x +9[/tex]
↓ evaluating the multiplication ... [tex]2 \cdot 9 = 18[/tex]
[tex]2x - 18 = x + 9[/tex]
↓ adding 18 to both sides
[tex]2x = x + 27[/tex]
↓ subtracting x from both sides
[tex]\boxed{x = 27}[/tex]
So, Mr. Edwin is 27 years old.