c/
\(\Leftrightarrow\dfrac{5\left(7x-1\right)}{30}+\dfrac{30.2x}{30}-\dfrac{6\left(16-x\right)}{30}=0\)
\(\Leftrightarrow5\left(7x-1\right)+60x-6\left(16-x\right)=0\)
\(\Leftrightarrow35x-5+60x-96+6x=0\)
\(\Leftrightarrow101x-101=0\Leftrightarrow x=1\)
\(a,\Leftrightarrow\dfrac{5x-2}{3}=\dfrac{-3x+5}{2}\)
\(\Leftrightarrow2\left(5x-2\right)=-9x+15\)
\(\Leftrightarrow10x+9x=15+4\)
\(19x=19\Leftrightarrow x=1\)
b/
\(\Leftrightarrow\dfrac{3\left(10x+3\right)}{36}-\dfrac{36}{36}-\dfrac{4\left(6+8x\right)}{36}=0\)
\(\Leftrightarrow3\left(10x+3\right)-36-4\left(6+8x\right)=0\)
\(\Leftrightarrow30x+9-36-24-32x=0\)
\(\Leftrightarrow-2x-51=0\)
\(\Rightarrow x=\dfrac{-51}{2}\)
