Szczegółowe wyjaśnienie:
[tex]a)\ (a+b)+c=a+b+c\\\\b)\ a-(d+b)=a-d-b\\\\c)\ 3a-(-c+d)=3a-(-c)-d=3a+c-d\\\\d)\ -(8x+2y+3d)=-8x-2y-3d\\\\e)\ 6-(-x-4y)+2x=6-(-x)-(-4y)+2x=6+x+4y+2x=6+3x+4y\\\\f)\ 2x^2+(3x-3)-x^2=x^2+3x-3\\\\g)\ 8xy-(-y+10x-8)=8xy-(-y)-10x-(-8)=8xy+y-10x+8\\\\h)\ (8x^2+4m^2-8)-(-5x+8m-7)=8x^2+4m^2-8-(-5x)-8m-(-7)\\\\=8x^2+4m^2-8+5x-8m+7=8x^2+4m^2+5x-8m-1\\\\i)\ (a-b)-(d-b^2)=a-b-d-(-b^2)=a-b-d+b^2\\\\j)\ (3ab+2a-3b)+(2a^2-b^2)=3ab+2a-3b+2a^2-b^2\\\\k)\ (kt-t)+(-s+kts)-(-st)=kt-t-s+kts+st[/tex]
[tex]\l)\ (-14-x^2)-(8y^2+x-y)=-14-x^2-8y^2-x-(-y)\\\\=-14-x^2-8y^2-x+y[/tex]
