x/15
15 - 2x
15
It is: r/15
It is: 15+w
x-15, x represents the unknown number, and to have 15 less you would simply subtract 15 from x.... therefore your answer is x-15
2x+15
It is: 15+w or w+15 as a algebraic expression
|Any Number|+15
n = number 2(n + 15) ======
-15 ----- n (-15 over a variable)
(3x+15)/2
It is an algebraic expression that can be simplified to: -21x-15.
15 - 2x
15-k
Yes, "15 - 7" is an algebraic expression. It consists of numbers and an arithmetic operation (subtraction). However, it does not contain any variables, so it's a numerical expression rather than a full algebraic expression. The result of this expression is 8.
15
It is: 15+w