Answer. Mass is a measurement of how much matter is in an object; weight is a measurement of how hard gravity is pulling on that object. Your mass is the same wherever you are, on Earth; on the moon; floating in space, because the amount of stuff you're made of doesn't change. hope this help.............
Yes is A and the solution is that when you add negatives it restart number like 3x - - 3= 0
N could be equal to 9,10,11, etc
