Weegy: If you mean 2x+4=0, then 2x=-4, x=-2. Thanks for using Weegy!!! User: The sum of negative eighteen and a number is eleven. What is the number User: In ancient times, people classified plants and animals by use.
true or fase? Weegy: That is True User: Aristotle contributed to the science of taxonomy when he classified animals in two groups and plants in _____ groups.