\(\left(3\cdot x-16\right)\cdot7^3=2\cdot7\)
\(\Rightarrow3\cdot x-16=\dfrac{2\cdot7}{7^3}\)
\(\Rightarrow3\cdot x-16=\dfrac{2}{7^2}\)
\(\Rightarrow3\cdot x-16=\dfrac{2}{49}\)
\(\Rightarrow3\cdot x=\dfrac{2}{49}+16\)
\(\Rightarrow3\cdot x=\dfrac{786}{49}\)
\(\Rightarrow x=\dfrac{786}{49}:3\)
\(\Rightarrow x=\dfrac{262}{49}\)
\(\left(3x-16\right)\cdot7^3=2\cdot7\)
\(\left(3x-16\right)\cdot343=14\)
\(1029x-5488=14\)
\(1029x=14+5488=5502\)
\(x=\dfrac{5502}{1029}=\dfrac{262}{49}\)
`(3x-16) *7^3=2*7`
`=> (3x-16)*343=14`
`=> 3x-16=14/343`
`=> 3x=14/343+16`
`=>3x=786/49`
`=>x=786/49:3`
`=>x=262/49`
