\(B=\dfrac{3+\dfrac{3}{4}-\dfrac{3}{19}}{\dfrac{5}{2}+\dfrac{5}{8}-\dfrac{5}{38}}\cdot\dfrac{15+\dfrac{15}{17}-\dfrac{5}{48}+\dfrac{15}{34}}{2+\dfrac{3}{17}-\dfrac{1}{72}}+2012\\ B=\dfrac{3\left(1+\dfrac{1}{4}-\dfrac{1}{19}\right)}{\dfrac{5}{2}\left(1+\dfrac{1}{4}-\dfrac{1}{19}\right)}\cdot\dfrac{15-\dfrac{5}{48}+\dfrac{45}{34}}{2+\dfrac{3}{17}-\dfrac{1}{72}}+2012\\ B=\dfrac{3}{\dfrac{5}{2}}\cdot\dfrac{\dfrac{15}{2}\left(2-\dfrac{1}{72}+\dfrac{3}{17}\right)}{2+\dfrac{3}{17}-\dfrac{1}{72}}+2012\\ B=\dfrac{6}{5}\cdot\dfrac{15}{2}+2012=2021\)
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