Hello there!
So we have 20% by the x=80 or 20/100 as a fraction by the x=80.
First you had to multiply from both sides of 100 and dividing by 20 from both sides.
x=80*100/20
x=400
You can also to simplify by entering 80*100÷20 and the answer is x=400 is the right answer. Hope this helps! Thank you for posting your question at here on Brainly. -Charlie
