sorry jedno zadanie się nie sfotografowało
[tex]2(x-2)-\frac{x-1}{3}=2 / *3\\2*3(x-2)-(x-1)=2*3\\6(x-2)-(x-1)=6\\6x-12-x+1=6\\6x-x=6+12-1\\5x=17 /:5\\x=\frac{17}{5}=3\frac{2}{5}[/tex]
[tex]8x+7+2x-6y-2y=10x-8y+7\\8x+2x-10x-6y-2y+8y=7-7\\10x-10x-8y+8y=0\\0=0[/tex]
[tex]4+5x-2=7x-2\\5x-7x=-2-4+2\\-2x=-4 /:(-2)\\x=2[/tex]
