a: \(\dfrac{3}{17}\cdot\dfrac{6}{29}-\dfrac{3}{17}\cdot\dfrac{35}{29}+2022\dfrac{3}{17}\)
\(=\dfrac{3}{17}\left(\dfrac{6}{29}-\dfrac{35}{29}\right)+2022+\dfrac{3}{17}\)
\(=-\dfrac{3}{17}+\dfrac{3}{17}+2022\)
=2022
b: \(\dfrac{5}{6}-\left(\dfrac{1}{3}+\dfrac{1}{2}\right)\cdot20\%\)
\(=\dfrac{5}{6}-\dfrac{5}{6}\cdot\dfrac{1}{5}\)
\(=\dfrac{5}{6}-\dfrac{1}{6}=\dfrac{4}{6}=\dfrac{2}{3}\)
c: \(9,5+\left(-13,2\right)+12,5+\left(-0,8\right)\)
\(=\left(9,5+12,5\right)+\left(-13,2-0,8\right)\)
=22-14
=8
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