7 x n
7x4+8
If x is your variable, it would be 6x+7x. If x is negative, it would be 6(-x)+7(-x).
48-n=4n-7
0.87
If you write every number once, then you will write the number nine exactly once. If you mean "... the digit9, it should appear 20 times: 10 times in the ten's place, and 10 times in the one's place.
7x4+8
7x +9 = 6x
The real answer is n-7
The number 7 is written as seven.
If x is your variable, it would be 6x+7x. If x is negative, it would be 6(-x)+7(-x).
Seven.
48-n=4n-7
X = number 48 - X = 4X - 7
0.87
7,000,000
If seven times a number results in 35, then six times a number would be five less.
If you write every number once, then you will write the number nine exactly once. If you mean "... the digit9, it should appear 20 times: 10 times in the ten's place, and 10 times in the one's place.