1)
[tex]5x - 0,8 = x+0,1+x\\\\5x-0,8 = 2x+0,1\\\\5x-2x = 0,1+0,8\\\\3x = 0,9 \ \ /:3\\\\x = 0,3[/tex]
2)
[tex]\frac{y+3}{2}-(1-y) = 4,5 \ \ /\cdot2\\\\y+3 -2(1-y) = 9\\\\y+3-2+2y = 9\\\\3y+1 = 9\\\\3y = 9-1\\\\3y = 8 \ \ /:3\\\\y = \frac{8}{3} = 2\frac{2}{3}[/tex]
3)
[tex]4x(3x-2) = (2x+3)(6x-1)\\\\12x^{2}-8x = 12x^{2}-2x+18x-3\\\\12x^{2}-8x = 12x^{2}+16x-3\\\\12x^{2}-12x^{2}-8x-16x=-3\\\\-24x = -3 \ \ /:(-24}\\\\x= \frac{1}{8}[/tex]
