Số vở của Huy là:
(42+3)x2=90( quyển)
đáp số:90 quyển
chúc bạn may mắn!
90 quyển bn ạ bài dễ như này mà bn ko bít à
90 quyển đúng 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%