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Tim mot phan so,biet rang neu them 2 vao tu so va giu nguyen mau so thi duoc phan so co gia tri bang 1;neu them 3vao mau so va giu nguyen tu so thi douc phan so co gia tri bang 1/2?
tim mot phan so biet rang neu cong them 4 vao tu so va giu nguyen mau so thi ta duoc phan so moi bang 1 con neu giu tu so va cong them 3 vao mau so thi ta duoc phan so moi bang 1/2
tim mot phan so sao cho neu them 4 vao tu so va giu nguyen mau so ti ta duoc phan so bang 1neu giu nguyen tu sova them 3 vao mau so ta duoc phan so
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tim mot phan so biet rang neu cong them 4 vao tu so va giu nguyen mau thi ta duoc phan so moi bang 1 con neu giu nguyen tu so va cong them 3 vao mau so thi ta duoc phan so moi bang 1/2
CÁC BẠN GIÚP MÌNH ĐI NHA '!!!!!!!!!!!!!!!!! THANK YOU "AI LAM NGAY DUOC THI HO MINH"
Tim 1 phan so biet rang neu cong them 4 vao tu so va giu nguyen mau so thi ta duoc phan so moi bang 1, con neu giu nguyen tu so va cong them 3 vao mau so thi ta duoc phan so moi bang 1/2
Tim 1 phan so biet rang neu cong them 4 vao tu so va giu nguyen mau so thi ta duoc phan so moi bang 1,con neu giu nguyen tu so va cong them 3 vao mau so thi ta duoc phan so moi bang 1/2
cho phan so 15/39 tim mot so tu nhien biet rang khi cong them so do vao mau so cua phan so da cho va giu nguyen tu so thi duoc phan so moi co gia tri bang 3/11
tim mot phan so biet neu them 19 don vi vao tu so ta duoc mot phan so moi co gia tri bang 1 va biet tong cua tu so va mau so la 121
tim mot phan so biet neu them 19 don vi vao tu ta duoc phan so moi co gia tri bang 1 va biet tong cua tu so va mau so bang 121