Answer:
a=2.25
Step-by-step explanation:
Given the equation 4.5=2a, you'd finds the value of "a" and divide both sides by 2.
4.5/2=a
2.25=a
a=2.25
Answer:
It is D, I think it’s because the letters need to be around in the same order
Answer:
2 3/4 C
Step-by-step explanation:

Step-by step explanation:
That's a great question. Look for things such as these:
x=x (infinite solution)
x=12 (one solution)
x+3 = x + 5 (no solutions)
https://youtu.be/bq5gDsEdN3Q this video has more information, copy and paste the link into your search engine.