In order to have the variable by itself you have to add 20 to both sides. So your answer would be a=b+20. I hope this helps love! :)
Answer:
32,000 or 345,600
Step-by-step explanation:
if you have 100 x 320 will make 32,000 if you times the 1080 with the 320 it will be 345,600 now add them together isss 377,600 btw np