Question

tim x biet: 0,(26).x=1,2(31)

Answer 1

x= 4,68(846153)

mk tính máy đó, ko sai đâu

Answer 2

tinh ve kia ra roi tim x , mak bn ghi de bai ko ro y ti nao

Answer 3

\(0,\left(26\right).x=1,2\left(31\right)\)

\(\frac{26}{99}x=\frac{1219}{990}\)

\(\Leftrightarrow x=\frac{\frac{1219}{990}}{\frac{26}{99}}=\frac{1219}{260}\)

P/s: cái đầu dễ ~ 

 \(1,2\left(31\right)=\frac{231-2}{990}=1\frac{229}{990}=\frac{1219}{990}\)

\(\)