I dont understand this at all can someone do it for me?

 go to https://www.symbolab.com/solver/equation-calculator and input it there. I know it may seem like im giving you just the answer, but see how the problem is solved on the site. You need to solve for x. Lets say an example is x-4=8. You need to add 4 to -4 and 4 to 8,since -4 is negative you do the opposite, and if it was positive you do negative. It cancels out with -4, so adding 4 to 8 is 12 is x=12. You can check your answer by inputing it back into the problem, so 12-4 does equal 8, so it is right. If a problem has multiplication, do division,

and if it has division, do multiplication and vice versa. If that didnt help then i can do these specific problems and explain them in detail

Step-by-step explanation:

10% of increase is the final answer! : )

answer: 230 miles ( vote ! )

step-by-step explanation:

180.39 minus 17.99 equals 162.4

then divide 162.4 by .80 to get 230