(1)2x+8=11.26,
2x+8-8=11.26-8,
2x=3.26,
2x÷2=3.26÷2,
x=1.63;
(2)x-1.2=9.3,
x-1.2+1.2=9.3+1.2,
x=10.5;
(3)5x+8=22,
5x+8-8=22-8,
5x=14,
5x÷5=14÷5,
x=2.8;
(4)1.2x+0.56=2,
1.2x+0.56-0.56=2-0.56,
1.2x=1.44,
1.2x÷1.2=1.44÷1.2,
x=1.2;
(5)6x-2x=18,
4x=18,
4x÷4=18÷4,
x=4.5;
(6)1.5x+1.7x=6.4,
3.2x=6.4,
3.2x÷3.2=6.4÷3.2,
x=2.