Các câu hỏi tương tự
cho phan so a/b . Neu rut gon phan so a/b thi ta duoc phan so 3/4 . Neu cong them 15 don vi vao tu so roi rut gon thi duoc phan so 7/6. Tim phan so a/b
cho phân số a/b, rút gọn phân số a/b ta duoc phan so 5/6. neu thêm 8 don vi vao mau so b ma giu nguyen tu so a thi ta duoc phan so moi. rut gon phan so moi ta duoc phan so 3/4. tim phan so a/b
cho 2 phan so 5/8 va 4/5.hay tim phan so a/b sao cho khi dem phan so 5/8cong voi phan so a/b va dem phan so a/b tru di phan so a/b thi duoc hai phan so co thuong la 2 ?
tim phan so co mau so lon hon tu so 21 don vi va sau khi rut gon ta duoc phan so 4 phan 7
cho hai phan so 5/8 va 4/5 hay tim phan so a/b sao cho khi dem phan so 5/8 +voi phan so a/b va dem phan so 4/5-di phan so a/b thi ta duoc 2 phan so co ti so la 2
cho hai phan so 7/9 va 3/11 tim phan so a/b sao cho dem moi phan so nhan tru cho a/b thi duoc phan so moi co ti so la 5
cho phan so 54/36 . tim so tu nhien a sao cho khi bot a o tu so , them a vao mau so cua phan so ta duoc phan so moi . rut gon phan so moi ta duoc 4/5
Theo phan so c/d . Neu rut gon c/d phan so thi duoc phan so 6/7 . Neu gam tu so di 12 don vi roi rut gon thi duoc phan so 36/49 . Tim phan so c/d da cho .
cho phân số c/d. neu rut gon phan so c/d thi duoc phan so 2/5. neu giam tu so di 12 đv roi rut gon thi duoc phan so 4/25. tim phan so c/d.