Answer:
Difference: c - d
Variable: a
Coefficient: 9
Step-by-step explanation:
Oh, I see what it is now. (Ngl, you should be able to know this)
A variable is something of a placeholder where you can plug in values into an equation.
Difference is when you subtract something.
Coefficient is a numerical or constant quantity placed before and multiplying the variable in an algebraic expression.
