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 obviously are different because they donât have any distinct or definite solution to the problem. To sum up: 1.Expressions are incomplete mathematical phrases whereas equations are complete mathematical statements. 2.Expressions are like the typical English phrase whereas equations are complete sentences.