Answer:

Step-by-step explanation:

Subtract
from both sides:



Subtract
from both sides:



Multiply both sides by 15:



The associative property states : a + (b + c) = (a + b) + c....and this is what ur problem is.
Answer:
top one is -7
bottom one is -3
Step-by-step explanation:
65,000 give me a thanks or brainiest answer if this helps!