(1)x+6=11.8 x=5.8 (2)0.3x-0.3×23=3.9 x=36 (3)132÷x=4 x=33 (4)3(2.3x+0.4)=49.5 x=7 (5)16.3+26x=34.5 x=0.7 (6)16x-11x+33=63 x=6 (7)7.3x+7.1x-3.4=39.8 x=3 (8)67x+27x-1.4=130.2 x=1.4 (9)6x-3x-7=32 x=13 (10)2x+50×3=202 x=26 (11)15x+16x-3=183 x=6 (12)(6x-30)÷22=6 x=27