Answer:
18
Step-by-step explanation:
Answer:
y = 1x - 5
Step-by-step explanation:
Answer:

Step-by-step explanation:
and
does not have any common factor except for 
9/10,
3/4 = 15/20
9/10 = 18/20
Clearly 9/10 is greater.
Commutative, because no matter how you group the equation you will still get to same answer