a) \(3x-11=0\)
\(\Rightarrow3x=11\Rightarrow x=\dfrac{11}{3}\approx3,667\)
b) \(12+7x=0\)
\(\Rightarrow7x=-12\Rightarrow x=-\dfrac{12}{7}\approx-1,714\)
c) \(10-4x=2x-3\)
\(\Rightarrow2x+4x=10+3\Rightarrow6x=13\Rightarrow x=\dfrac{13}{6}\approx2,167\)