Câu hỏi của Nguyen Tien Dung

Question

cho p/s a/b biet rang neu them 6 vao tu so va them 21 vao mau so thi gia tri cua p/s ko thay doi . co bao nhieu phan so nhu vay

Cristiano Ronaldo · Accepted Answer

Ta có: $\frac{a+6}{b+21}=\frac{a}{b}\Rightarrow\frac{a}{b}=\frac{6}{21}=\frac{2}{7}$

$\Rightarrow\frac{a}{b}=\frac{2}{7}$

Câu trả lời:

Ta có: $\frac{a+6}{b+21}=\frac{a}{b}\Rightarrow\frac{a}{b}=\frac{6}{21}=\frac{2}{7}$

$\Rightarrow\frac{a}{b}=\frac{2}{7}$

Nguyen Tien Dung · Answer

ban oi co bao nhieu p/s nhu vay co ma

Câu trả lời:

ban oi co bao nhieu p/s nhu vay co ma