WANG↗⌒↖QIAN,
设这本书一共有X页
X-(4/15X-9)-(2/11X+2)=98
X-4/15X+9-2/11X-2=98
(1-4/15-2/11)X=98-7
X=91÷(1-4/15-2/11)
X=165