7. An English book has 12 more pages than a Chinese book, 3 English books and 4 Chinese books have a total of 1275 pages. 1 English book has
$\qquad$ pages.
【Analysis】Replacing 4 Chinese books with 4 English books results in 48 more pages, so 7 English books total $1275+48=1323$ pages, thus 1 English book is $1323 \div 7=189$ pages.