Respuesta :
A variable is an English letter we take for unknown values or quantities.We are given expression : [tex]\frac{6}{7}xy[/tex].
In the above given expression we have x and y English letters, because we don't know the values of them.
And we have some constant in front of those English letters.
We have [tex]\frac{6}{7}[/tex] in front of xy.
The coefficients are the constant numbers in front of variables.
