x+10>13 it wouldn't be x+10-13 ??
x-2
25x-13=37
n*5 - 6
(4n) - 25
12-3/4x
x + (13-10)
Subtract 25 from whatever variable you use for "a number". If your number is "x", then the expression becomes "x - 25".
Let the unknown number be x and so the algebraic expression is: 2x -13
( n - 16 )
As an algebraic expression it is: 2x-9
x-2
3n-30
x^2 - 7
x4 - 3
25x-13=37
Let the number be x and so the expression is: 4x -7
n*5 - 6