If 4 times a number is added to 9, the result is 49.
A number means an arbitrary variable, let's call it x.
4 times a number means we multiply x by 4
4x
Added to 9 means we add 9 to 4x
4x + 9
The result is means we have an equation, so we set 4x + 9 equal to 49
4x + 9 = 49 <-- This is our algebraic expression
To solve this equation, we type it in the search engine and get x = 10
A number means an arbitrary variable, let's call it x.
4 times a number means we multiply x by 4
4x
Added to 9 means we add 9 to 4x
4x + 9
The result is means we have an equation, so we set 4x + 9 equal to 49
4x + 9 = 49 <-- This is our algebraic expression
To solve this equation, we type it in the search engine and get x = 10