4x+0.3×1.9=1.34 x=0.1925
0.9x-0.44+0.1x=4.7 x=5.14
15x÷6=25 x=10
3x(x+5)=6x(x-4) x=0或x=13
4x(3.2x-2.5)=22 x=1.76或x=-0.98
(8x+4)÷4+1=8 x=3/8
4x+0.3×1.9=1.34 x=0.1925
0.9x-0.44+0.1x=4.7 x=5.14
15x÷6=25 x=10
3x(x+5)=6x(x-4) x=0或x=13
4x(3.2x-2.5)=22 x=1.76或x=-0.98
(8x+4)÷4+1=8 x=3/8