The number is 45. The sum of its digits i.e. 4+5=9 Five times the sum of its digits i.e. 5 times 9 which is 45
9(4+n)Nine times the sum of 4 and a number is an expression and can not be evaluated.
81 8+1=9 9*9=81
2(x + 9) = 2x + 18
9*n + 28 >= -20.
The number is 45. The sum of its digits i.e. 4+5=9 Five times the sum of its digits i.e. 5 times 9 which is 45
The number is 54. The sum of its digits is 5 + 4 = 9. 54/9 = 6.
81
the answer is 9
9(4+n)Nine times the sum of 4 and a number is an expression and can not be evaluated.
81 8+1=9 9*9=81
5+9(n)
18. The sum of its digits is 9. And yes, it is unique.
9+90=99 (90 is ten times as much as 9)
5 (9+x) Where x is the "a number"
The number is 9.
7x +9 = 6x