Giải phương trình:
a, \(\frac{1}{2}\left(x+1\right)+\frac{1}{4}\left(x+3\right)=3-\frac{1}{3}\left(x+2\right)\)
b, \(\frac{x+\frac{2\left(3-x\right)}{5}}{14}-\frac{5x-4\left(x-1\right)}{24}=\frac{7x+2+\frac{9-3x}{5}}{12}+\frac{2}{3}\)
c,3(x-1)(2x-1)=5(x+8)(x-1)
d, \(9x^2-1=\left(3x+1\right)\left(4x+1\right)\)
ra nhiều thế