- 9(x-11)-11(x-9)=2, 9x-99-11x+99=2, 9x-11x=2+99-99, -2x=2, x=2/-2, x=-1;
- 6(x+8)+8(x-6)=-126, 6x+48+8x-48=-126,
6x+8x=-126-48+48,14x=-126,x=-126/14,x=9;
- 7(x-8)-8(x+2)=-70,7x-56-8x-16=-70,7x-8x=56+16-70,-x=2,x=-2;
- 11(x+10)+10(x+6)=170,11x+110+10x+60=170,21x=170-110-60,21x=0,x=0;
- 6(8x+10)+8(4x+6)=268,48x+60+32x+48=268,48x+32x=-60-48+268,80x=160,x=160/80,x=2
- 8(6x+8)-9(12x+9)=-137,48x+64-108x-81=137,-60x=81-64+137,-60x=154,x=154/60,x=57/30;
- 4(6x-11)+6(7x+5)=-14, 24x-44+42x+30=-14,42x+24x=30-14+44,66x=60,x=60/66,x=10/11
- 10(10x+3)+6(2x-6)=-6,100x+30+12x-36=-6,100x+12x=+36-30-6,112x=0,x=0;
- 8(x+10)=-10(x-4)+4,8x+80=-10x+40,8x+10x=40-80,18x=-40,x=-40/18,x=-20/9
