The sum of five and twice a number is 17
The phrase a number means an arbitrary variable, let's call it x
x
Twice a number means we multiply x by 2:
2x
The sum of five and twice a number means we add 5 to 2x:
2x + 5
The phrase is means an equation, so we set 2x + 5 equal to 17 to get our algebraic expression
2x + 5 = 17
As a bonus, if the problem asks you to solve for x, we type in this algebraic expression into our math engine and we get:
x = 6
The phrase a number means an arbitrary variable, let's call it x
x
Twice a number means we multiply x by 2:
2x
The sum of five and twice a number means we add 5 to 2x:
2x + 5
The phrase is means an equation, so we set 2x + 5 equal to 17 to get our algebraic expression
2x + 5 = 17
As a bonus, if the problem asks you to solve for x, we type in this algebraic expression into our math engine and we get:
x = 6