Các câu hỏi tương tự
Cho phan so a/b co gia tri bang 3/4 neu giam mau so di 12 don vi va giu nguyen tu so thi duoc phan so moi co gia tri bang 6/7 tim gia tri cua phan so a/b
cho a/b bang 4/5 neu cong them 33 vao tu so va giu nguyen mau son thi duoc phan so moi la 25/41
ai nhanh minh tick
minh can gap chieu nay nop roi xin cac ban giup minh
tim 1 phan so co gia tri =3/5 biet neu cong them 4 don vi vao tu so thi duoc phan so moi co gia tri = 3/4
tim mot phan so biet neu them 12 don vi vao tu thi duoc phan so moi co gia tri bang 1 va biet phan so do co gia tri bang 9/11
1.tim 1 phan so biet neu chuyen 5 don vi tu mau so len tu so thi ta dc phan so moi co gia tri =1 con chuyen 1 don vi tu tu so xuong mau so ta dc phan so moi co gia tri = 1/2
2.tim 1 phan so biet neu them 2 don vi vao tu so thi ta dc phan so moi co gia tri =1 con chuyen 5 don vi tu tu so xuong mau so ta dc phan so moi co gia tri = 1/2
3.
Tim mot phan so biet neu them 12 don vi vao tu thi duoc phan so moi co gia tri bang 1 va biet phan so do co gia tri bang 9/11
tim mot phan so biet neu them 8 don vi vao tu so ta duoc phan so moi co gia tri bang 1, con neu chuyen 1 don vi tu mau so len tu so thi ta duoc mot phan so moi co gia tri bang \(4/5\) .
tim mot phan so neu them 12 don vi vao tu so thi duoc phan so moi co gia tri bang 1 biet phan so do co gia tri la 9/11
Tim mot phan so biet neu them 12 don vi vao tu thi duoc phan so moi co gia tri bang 1 va biet phan so do bang 9/11
tim 1 phan so biet neu them 8 don vi vao tu so ta duoc phan so co gia tri bang 1,con neu chuyen 1 don vi tu mau so len tu so ta duoc phan so moi co gia tri bang 4/5