[tex]a)\\\\(5x-3)(x+4)=0\\\\5x-3=0\ \ lub\ \ x+4=0\\\\5x=3\ \ |:5\ \ lub\ \ x=-4\\\\x=\frac{3}{5}\ \ lub\ \ x=-4[/tex]
[tex]b)\\\\(3x+5)(x-7)=0\\\\ 3x+5=0\ \ lub\ \ x-7=0\\\\3x=-5\ \ |:3\ \ lub\ \ x=7\\\\x=-\frac{5}{3}=-1\frac{2}{3}\ \ lub\ \ x=7[/tex]
[tex]c)\\\\ \frac{2x+3}{2} = \frac{5x-3}{3} \ \ |*6\\\\3(2x+3)=2(5x-3)\\\\6x+9=10x-6\\\\6x-10x=-6-9\\\\-4x=-15\ \ |:(-4)\\\\x=\frac{15}{4}=3\frac{3}{4}[/tex]
[tex]d)\\\\ \frac{3x+4}{3} = \frac{-2x+1}{2} \ \ |*6\\\\ 2(3x+4 ) =3(-2x+1) \\\\6x+8=-6x+3\\\\6x+6x=3-8\\\\12x=-5\ \ |:12\\\\x=-\frac{5}{12}[/tex]
