Answer: B
Step-by-step explanation: Explanatory means to explain, or provide information. Argumentative tries to prove a claim is correct
I hope this helps you! :)
Answer: look at the picture
Step-by-step explanation: Hope this help :D
6+4/5a=9/10a
make bottom numbers same
into 10
60/10+8/10a=9/10a
minus 8/10a from both sides
60/10=1/10a
multiply both sides by 10
60=a