The expression that is not equivalent it the last one: -1/-4
The rest of the expressions are equal to: -0.25
The last one is: 0.25
The reason it is not equivalent is because it is a negative divided by a negative whereas the rest are a negative divided by a positive. A negative divided by a negative will equal a positive. It was the only positive integer in the expressions listed above. Thus, the answer is: -1/-4
