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Bob: " Hi, Stanley. What is the coefficient of the variable in this algebraic expression $3x^{2}-4$?"  Stanley:" I can give you a hint. The value of the coefficient is $7$ more than the constant."  Stanley\textquotesingle s hint is~\uline{~~~~~~~~~~}~and the coefficient of the variable is~\uline{~~~~~~~~~~}~. 
Overseas Competition->Knowledge Point->Calculation Modules->Basic Concepts of Equation->Equivalent Substitution->Algebraic Expressions
Constant: $-4$  Coefficient of the variable: $3$ 