Answer:
Step-by-step explanation:
Hope this is helpful.
Answer: -9
Step-by-step explanation:
Answer:
x=135
Step-by-step explanation:
all the numbers need to add up to 180
Answer: C, 7s + 3t and 3t + 7s.
Step-by-step explanation: Nothing is changing between the expressions except for their position. In addition, position does not matter though, so these two are the SAME EXPRESSION