[tex] \frac{15}{4}x - \frac{3}{2}- \frac{6}{4} - \frac{3}{2}x+ \frac{4}{2}-1= \frac{9}{4}x- \frac{1}{2}-1= \frac{9}{4}x- \frac{1}{2}- \frac{2}{2} = \frac{9}{4}x- \frac{3}{2} = [/tex]
=[tex] \frac{3}{2}( \frac{3}{2}x-1) [/tex]
[am dat factor comun la urma]
