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.
A term is a constant or a variable in an expression. In the equation 12+3x+2x 2 =5x-1, the terms on the left are 12, 3x and 2x 2, while the terms on the right are 5x, and -1. Combining Like Terms is a process used to simplify an expression or an equation using addition and subtraction of the coefficients of terms.