\(113-\left(x+18\right)=2021^0\)
\(\Rightarrow113-\left(x+18\right)=1\)
\(\Rightarrow x+18=113-1\)
\(\Rightarrow x+18=112\)
\(\Rightarrow x=112-18\)
\(\Rightarrow x=94\)
113−(x+18)=20210113−(x+18)=20210
⇒113−(x+18)=1⇒113−(x+18)=1
⇒x+18=113−1⇒x+18=113−1
⇒x+18=112⇒x+18=112
⇒x=112−18⇒x=112−18
⇒x=94