9 times a number has 1 subtracted from it. The result is trebled. The answer is the same if you add 7 to twice the number and multiply the result by 7. What is the number?
Accepted Solution
A:
Answer: 4Step-by-step explanation: 1) You need to first understand the question and a way to do that is to list plainly the information given.2) Let the number be (X)3) For the equation from the first sentence given; 3(9x-1) 4) From the second sentence; 7(7+2x)5) Equating both sentences together, since the question says they are the same 3(9x-1) = 7(7+2x)6) Opening the bracket/expanding the equation.... 27x-3=49+14xSolving further we will have 13x = 52X= 52/13= 4