\(a,\rightarrow460+340=\dfrac{x+200}{4}\\ 800=\dfrac{x+200}{4}\\ \rightarrow800\cdot4=x+200\\ 3200=x+200\\ \rightarrow x=3000\)
\(b,\rightarrow x+5\cdot2-\left(32+8-15\right)=0\\ x+10-25=0\\ x+10=25\\ x=15\)
\(c,\rightarrow51-\dfrac{25}{2}\cdot4\cdot\dfrac{1}{10}+x:\dfrac{3}{4}=200\\ 51-5+x:\dfrac{3}{4}=200\\ 46+x:\dfrac{3}{4}=200\\ x:\dfrac{3}{4}=154\\ x=154\cdot\dfrac{3}{4}\\ x=\dfrac{231}{2}\)
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