the number itself
n 7
x-7
7+2
It is impossible to tell without knowing what the number being multiplied by four is.
the number itself
n 7
X _ 7
x-7
7+2
If seven times a number results in 35, then six times a number would be five less.
7/(3 - x)
Eleven
If you take the units digit and double it then subtract it from the rest of the number then the difference is divisible by seven. You may have to do it several times. 574 57-8=49 So it is a multiple of 7.
A wedge is a double sided screw basically. Therefore, the difference is the number of sides.
7/ 3/
The difference between a number x and twice y is equal to fifteen.