\(390-\left(x-7\right)=169:3\)
\(\Rightarrow390-\left(x-7\right)=\dfrac{169}{3}\)
\(\Rightarrow x-7=390-\dfrac{169}{3}\)
\(\Rightarrow x-7=\dfrac{1001}{3}\)
\(\Rightarrow x=\dfrac{1001}{3}+7\)
\(\Rightarrow x=\dfrac{1022}{3}\)
390-(X-7)=169:3
390 - (X-7)= 169/3
X - 7 = 390 - 169/3
X - 7 = 1001/3
X= 1001/3 + 7
X= 1022/3