Adding a comment so the other answerer can get Brainliest :)
So basically u keep the x on one side and the rest on the other. Get a common denominator. to get rid of the half u times both sides by 2.
hope this helps
Answer:
66.6
Step-by-step explanation:
180-113.4=66.6
D. 10^6 = 1000000 x 2 = 2000000 x 800.5 = 1601000000 = 1.601 x 10^9