You add or subtract depending on the equasion. if you give me an example then I can show you but it greatly has to do with the equsion.
I’m not sure,where is that from?
Answer:
D?
Step-by-step explanation:
im sorry if incorrect
Answer:
True.
Step-by-step explanation:
The Han era was when paper and porcelain was invented. It was a time of peace when China could build up.
Hope this helps plz mark brainliest :D
