\(\frac{3}{5}=\frac{3+12}{5+x}=\frac{1}{3}\)
=> \(\frac{15}{5+x}\)=\(\frac{1}{3}\)
15*3=(5+x)*1=>
45=5+x
x=45-5
x=40
Đúng 0
Bình luận (0)
Các câu hỏi tương tự
cho phan so 3 4 neu cong them 12 vao tu so thi can phai cong them bao nhieu vao mau so de duoc phan so moi bang 3 4
cho phan so 3/4 neu cong them 12 vao tu so thi can phai cong them bao nhieu vao mau so de duoc phan so moi bang 3/4?
cho phan so 65/97. hoi phai them vao tu so va mau so bao nhieu don vi de phan so moi bang 3/5
cho phan so 5/6.hoi neu cong them 18vao mau so cua -phan so da cho thi phai cong them so nao vao tu so cua phan so do de duoc phan so moi van bang 5/6
1. Cho phan so 79/104 . Hoi phai cung phai them tu so va mau so bao nhieu don vi thi ta duoc phan so moi co gia tri bang 4/5 2. Cho phan so 55/92 .hoi phai cung bot tu so va mau so bao nhieu don vi thi ta dc phan so moi co gia tri bang 1/23 .cho phan so98/115 . Hoi phai cung bot tu so va mau so bao nhieu don vi thi ta dc phan so moi co gia tri 4/54.Cho phan so 86/105 .hoi phai cung phai bot tu so va mau so bao nhieu dong vi thi ta xc phan so moi co gia...
Đọc tiếp
1. Cho phan so 79/104 . Hoi phai cung phai them tu so va mau so bao nhieu don vi thi ta duoc phan so moi co gia tri bang 4/5
2. Cho phan so 55/92 .hoi phai cung bot tu so va mau so bao nhieu don vi thi ta dc phan so moi co gia tri bang 1/2
3 .cho phan so98/115 . Hoi phai cung bot tu so va mau so bao nhieu don vi thi ta dc phan so moi co gia tri = 4/5
4.Cho phan so 86/105 .hoi phai cung phai bot tu so va mau so bao nhieu dong vi thi ta xc phan so moi co gia tri =3/4
5.cho phan so 67/130 .hoi phai cung phai bot tu so va mau so bao nhieu don vi thi ta dc phan so moico gia tri =2/5
6.cho phan so 59/85. Hoi phai chuyen tu tu so xuong mau so bao nhieu don vi thi ta dc phan so moi co gia tri =1/3
7. Cho phan so 59/109 . Hoi phai chuyen tu mau so len gu so bao nhieu don vi thi ta duoc phan so moi co gia tri =3/4 .
Mai minh se nhan tiep con nhieu de lam co giao phat de ve lam ra tet con di thi !!!!
cho phan so 39/73 hoi phai them vao ca tu va mau bao nhieu don vi de duoc phan so co gia tri bang phan so 3/5
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
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