a number is added to 9 less than twice that number,if the result _英语解答

a number is added to 9 less than twice that number,if the result is 180,what is the number?

人气：291 ℃　时间：2020-03-20 21:07:32

解答

Let the number be x.Twice the number = 2xNine less than twice the number = Nine less than (2x) = 2x - 9A number is added to 9 less than twice the number = A number is added to (2x - 9) = x + (2x - 9)R...