x - 30%x = 1/1/5
x - 3/10 x = 6/5
x( 1- 3/10) = 6/5
7/10x = 6/5
x = 6/5 : 7/10
x = 12/7
x - 30%x = 1/1/5
x - 3/10 x = 6/5
x( 1- 3/10) = 6/5
7/10x = 6/5
x = 6/5 : 7/10
x = 12/7
\(\Rightarrow x\left(1-\frac{30}{100}\right)=\frac{6}{5}\Rightarrow\frac{7}{10}x=\frac{6}{5}\Rightarrow x=\frac{12}{7}\)