\(105-\left(135-7x\right):9=97\)
\(\Rightarrow\left(135-7x\right):9=8\)
\(\Rightarrow135-7x=72\)
\(\Rightarrow7x=63\)
\(\Rightarrow x=9\)
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\(275-\left(113+x\right)63=158\)
\(\Rightarrow275-113-x=95\)
\(\Rightarrow162-95=x\)
\(\Rightarrow x=67\)