[tex]k)\\\\ 6(3y + 2)-5(4y + 6) =-6 \\\\18y+12-20y-30=-6\\\\ 18y -20y =-6-12+30\\\\-2y=12 \ \ |:(-2)\\\\y= -6[/tex]
[tex]l)\\\\ -7(2z-3)-5(4-3z) = 1\\\\-14z+21-20+15z=1\\\\z+1=1\\\\z=1-1\\\\z=0[/tex]
[tex]m)\\\\ -3(5y + 2)-6(3y-7) = 3 \\\\-15y-6-18y+42=3\\\\-33y=3+6-42\\\\-33y=-33\ \ |:(-33)\\\\y=1[/tex]
[tex]n)\\\\2(7x-3) = 5-4(6-4x) \\\\14x-6=4-24+16x\\\\14x-16x =4-24+6\\\\-2x=-14\ \ |:(-2)\\\\x=7[/tex]
[tex]o)\\\\-3-(3x-2)=-8 \\\\-3-15x +10 =-8\\\\-15x=-8+3-10\\\\-15x=-15\ \ |:(-15)\\\\x=1[/tex]
[tex]p)\\\\ 4z-3(3z - 5) = 2z + 1\\\\4z-9z+15=2z+1\\\\-5z-2z=1-15\\\\-7z=-14\ \ |:(-7)\\\\z=2[/tex]
[tex]q)\\\\8(2x-1) + 3(4 -5x) = 0\\\\16x-8+12-15x=0\\\\x+4=0\\\\x=-4[/tex]
[tex]r)\\\\ -4(x-2) = 8-2(2x -5)\\\\ -4x+8=8-4x+10\\\\-4x+4x=18-8\\\\0=10\\\\rownanie\ sprzeczne,\ brak\ rozwiazania[/tex]
[tex]s )\\\\ x-3 = 2(2-3x)\\\\x-3=4-6x\\\\x+6x=4+3\\\\7x=7\ \ |:7\\\\x=1[/tex]
[tex]t)\\\\ x-4 + 3(3-2x) = 6(x-1)\\\\ x-4 + 9-6x = 6 x- 6\\\\ 5-5x = 6 x- 6\\\\-5x-6x=-6-5\\\\-11x=-11\ \ |:(-11)\\\\x=1[/tex]
