there's nothing in your screen
You cannot add -10y+9x or 10y+5x because of the rule “combine like terms”...
Answer:
7x+18
Step-by-step explanation:
Its data that is Qualitative Instead of Quantative
Answer:
c
Step-by-step explanation:associative: a+(b+c)=(a+b)+c
commutative: a+b=b+a
distributive: a(b+c)=ab+ac
inverse: I think it is a times 1/a=1, doesn't matter
