What expressions are equivalent to - 3*4/-5

Answer: Equivalent expressions have the same value for every possible value of

the variables they include. 5 * (x-4) and 5*x - 20 are equivalent

expressions because no matter what the value of x, they are equal in

value.

Equivalent equations are ones such that the truth of one implies and

is implied by the truth of the other. (y-2) ^2 = 0 and y = 2 are

equivalent equations, even though the expressions y and (y-2) ^2 are

not equivalent expressions.