Xinhua Bookstore imported 2800 literature and art books, 175 less than 7 / 8 of the science and technology books. How many science and technology books did the bookstore import? Use the equation to solve the problem
Design and transport x volumes of science and technology books
7/8x-175=2800
7/8x=2800+175
7/8x=2975
x=3400
A: the bookstore has brought in 3400 science and technology books