解方程,怎么写
(1)50-x=8.09
(2)5X-16=40+3x (3)2(X-12)+0.8=6.8(4)x÷2+3.5=7.5x(5)4.8-4x=1.2+5x(6)12.5x-0.41=8.4x(7)3.2x+2.4=1.8x+3.8(8)4.5(2x+6)÷2=18(9)21.6-3x=x+1.6(10)2(x-12)+0.8=6.8(11)0.6(2x-1.8)=3.18(12)3(8-2x)=6x(13)9(x-3)=6(x+2)