1/6X+6+ 1/8X-8 = X- 172
Get a solution
X=240
This book has 240 pages.
Analysis: Because this book has ***X pages.
So I watched it on the first day (1/6X+6).
I saw the page the next day (1/8x-8).
Because there are still 172 pages left, I have read (172-x) = (1/6x+6)+(1/8x-8) these two days.
The solution of the equation is X=240.
So this book is ***240 pages.
Update 1: The most important thing is to separate.
Not the purpose of the land! ! ! ! ! ! !
1. Sequ