Rozwiązać równania zadanie POTRZEBNE na teraz daje Naj

[latex]1)\-7(x-2)=3x-1\ -7 x+14=3x-1\-7x-3x=-1-14\-10x=-15 /:(-10)\\x=frac{15}{10}\\x=frac{3}{2}[/latex] [latex]2)\10x(x-1)=30(x-1) /:10\ x(x-1)=3 (x-1)\ x(x-1)-3 (x-1)=0\(x-1)(x-3)=0\x-1=0 vee x-3=0\x=1 vee x=3[/latex] [latex]3)\0,4+0,25x=-2\0,25x=-2-0,4\0,25x=-2,4\\frac{25}{100}x=-frac{24}{10}\\frac{1}{4}x=-frac{12}{5} /*4\\x=-frac{48}{5}\x=-9,6[/latex] [latex]4)\ 2,1-0,3x=0,4x\0,4x+0,3x=2,1\07x=2,1 / *10\7x=21 /:7 \x=3[/latex] [latex]5)\\ frac{x+1}{2} - frac{x-1}{3} = frac{1}{4} / *12\\6(x+1)-4(x-1)=3\6 x+6-4 x+4=3\2x=3-10\2x=-7 /:2\\x=- frac{7}{2} \\x=-3frac{1}{2}[/latex] [latex]6)\\ frac{ 4x+7}{2} -frac{ 5x-1}{6} =x+5 /*6\\3( 4x+7) - ( 5x-1) =6x+30\12x+21 - 5x+1 =6x+30\ 12x - 5x -6x=30-22\x=8[/latex]