The phrase a number means an arbitrary variable. We can pick any letter a-z except for i and e.
Let's choose x.
Twice a number means we multiply x by 2:
2x
ten added to twice a number
2x + 10
The phrase is the same as means equal to. Set 25 equal to 2x + 10 to get our algebraic expression
25 = 2x + 10
If the problem asks you to solve for x, type it in our math solver and get
x = 7.5
Let's choose x.
Twice a number means we multiply x by 2:
2x
ten added to twice a number
2x + 10
The phrase is the same as means equal to. Set 25 equal to 2x + 10 to get our algebraic expression
25 = 2x + 10
If the problem asks you to solve for x, type it in our math solver and get
x = 7.5