zapisz w jak najprostszej postaci. a) (a+b)-(2a-b)-(a-2b) b) (3x-y+1)-(x-y)+(y-x) c) -(kx+ny)-(3kx+2ny)=(5kx-3ny) d) (2ab+a+3)-(3ab-a+3) e) (4x²-3x)-(x+0,1x²)-(x²-0,1x) Pomóżcie :)

[latex]a) \\(a+b)-(2a-b)-(a-2b)= a+b - 2a+b - a+2b= 4b - 2a[/latex] [latex]b) \(3x-y+1)-(x-y)+(y-x) = 3x-y+1 - x+y + y-x= x +y+1[/latex] [latex]c)\\ -(kx+ny)-(3kx+2ny)+(5kx-3ny)=- kx-ny - 3kx-2ny + 5kx-3ny =\\= kx-6ny[/latex] [latex]d) \\(2ab+a+3)-(3ab-a+3)= 2ab+a+3 - 3ab+a-3 = 2a-ab[/latex] [latex]e) \\(4x^2-3x)-(x+0,1x^2)-(x^2-0,1x)= 4x^2-3x - x-0,1x^2 - x^2+0,1x =\\=2,9x^2-3,9x[/latex]