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Dấu '/' đọc là phần nha! <3
A= 3469 - 54 / 6938 -108 = 3469 -54 / 2*(1234 -49) = 1/2
B= 2468 - 98 / 3702 - 147 = 2*(1234-49) / 3*(1234-49) =2/3
Sau khi rút gọn p/s ta đc: 1/2 và 2/3 => MC=6
Rồi quy đồng nha bạn
KQ: 3/6 và 4/6
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{3469-54}{6928-108}=\frac{3469-54}{2.\left(3469-54\right)}=\frac{1}{2}\)
\(\frac{2468-98}{3702-147}=\frac{2\left(1234-49\right)}{3\left(1234-49\right)}=\frac{2}{3}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
A = \(\frac{3469-54}{6938-108}\)
= \(\frac{3469-54}{2\left(3469-54\right)}\)
= \(\frac{1}{2}\)
B = \(\frac{2468-98}{3702-147}\)
= \(\frac{2\left(1234-49\right)}{3\left(1234-49\right)}\)
= \(\frac{2}{3}\)
BCNN(2,3) = 6
\(\frac{1}{2}=\frac{1.3}{2.3}=\frac{3}{6}\)
\(\frac{2}{3}=\frac{2.2}{3.2}=\frac{4}{6}\)
\(A=\frac{3469-54}{6938-108}=\frac{3469-54}{3469.2-54.2}=\frac{3469-54}{2.\left(3469-54\right)}=\frac{1}{2}=\frac{1.3}{2.3}=\frac{3}{6}\)
\(B=\frac{2468-98}{3702-147}=\frac{1234.2-49.2}{1234.3-49.3}=\frac{2.\left(1234-49\right)}{3.\left(1234-49\right)}=\frac{2}{3}=\frac{2.2}{3.2}=\frac{4}{6}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có: \(A=\dfrac{3469-54}{6938-108}\)
\(=\dfrac{3469-54}{2\left(3469-54\right)}=\dfrac{1}{2}\)
\(=\dfrac{3}{6}\)
Ta có: \(B=\dfrac{2468-98}{3702-147}\)
\(=\dfrac{2\left(1234-49\right)}{3\left(1234-49\right)}=\dfrac{2}{3}\)
\(=\dfrac{4}{6}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Rút gọn phân số:
C=\(\dfrac{3469-54}{6938-108}=\dfrac{3415}{6830}=\dfrac{3415\div3415}{6830\div3415}=\dfrac{1}{2}\)
D=\(\dfrac{2468-98}{3702-147}=\dfrac{2370}{3555}=\dfrac{2370\div1185}{3555\div1185}=\dfrac{2}{3}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(A=\frac{3469-54}{6938-108}\)
\(=\frac{3415}{6830}\)
\(=\frac{3415}{6830}=\frac{3415:3415}{6830:3415}=\frac{1}{2}=\frac{3}{6}\)
\(B=\frac{2468-89}{3720-147}\)
\(=\frac{2370}{3555}\)
\(=\frac{2370}{3555}=\frac{2370:1185}{3555:1185}=\frac{2}{3}=\frac{4}{6}\)
A=3469-54/6938-108=3469-54/2*(3469-54)=1/2
B=2468-98/3702-147=2*(1234-49)/3*(1234-49)=2/3
quy đồng:1/2=3/6 ;2/3=4/6 .
mình không viết được phân số như bạn nhưng mong bạn thông cảm![haha haha](https://hoc24.vn/media/cke24/plugins/smiley/images/haha.png)