bang 4 do chac 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000phan tram luon
Cho phan so 7/8, hay tim so A sao cho dem tu so cua phan so da cho tru di A va them A vao mau so ta duoc phan so moi 1/4.
cho phan so 25 phan 37 hay tim so tu nhien a sao cho dem mau so cua phan so da cho tru di a va giu nguyen tu so thi duoc phan so moi co gia tri 5 phan 6
Cho phan so 7/8 . Tim so tu nhien a sao cho lay tu so cua phan so tren tru di a va thêm a vao mâu so thi duoc phan so moi la 1/4
cho phan so 25/35 .hay tim so tu nhien c sao cho dem mau so cua phan so da cho tru di c va giu nguyen tu so ta duoc phan so moi co gia tri 5/6
cho phan so 7/8 hay tin so tu nhien m sao cho dem tu tru di m va va them m o mau ta duoc phan so moi la 1/4
cho phan so 53/75 hay tim so tu nhien m sao cho khi cong them m vao tu va mau cua phan so da cho thi ta duoc phan so moi bang phan so 3/4
Cho phan so 37/83 .Hay tim mot so tu nhien m sao cho khi them m vao tu so va bot m o mau so cua phan so da cho thi duoc phan so moi co gia tri bang 5/7
Cho phan so 82/103. Hay tim so tu nhien m sao cho khi them m vao ca tu va mau cua phan so da cho thi ta duoc phan so moi bang phan so 5/6?
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cho phan so.hay tim so tu nhien sao cho khi dem tu so cua phan so da bot so do va dem mau so cua phan so da cong voi so do thi ta duoc so moi
