Definition of dray. : a vehicle used to haul goods; especially : a strong cart or wagon without sides.
Expressions versus Equations. A difference between expressions and equations is what each represents. An expression shows a math relationship. One key to an expression is that there is no solution. An expression does not have an answer. An expression, however, can be evaluated. To evaluate an expression, substitute values for the variables.
Expressions and Equations. Terms. Algebraic Equation - An equation that contains one or more variables. Algebraic Expression - An expression that contains one or more variables. Coefficient - The number that is multiplied by the variable(s) in a single term. In the term 67rt , rt has a coefficient of 67.