The expression for eleven decreased by a number can be written as 11 - x, where x represents the unknown number being subtracted from eleven. This expression represents the operation of subtraction, where the value of x will determine the final result after subtracting from eleven.
13
the number is negative two.
three times a number decreased by eleven
15-X
17 - y
13
the number is negative two.
three times a number decreased by eleven
Let the number be x and so the expression is: x-19
As an expression it is: x-6
Eleven
x-(x+4)
15-X
a number decreased by 1
5-x=2
17 - y
It can be: x-7