解方程
X-X=2X+=70%X+20%X=3.6
X×=20×25%+10X=X-15%X=68
X+X=1215X-3×=X÷=12
6X+5=13.43X=
X÷=X+X=4X-6×=2
÷X=X=X=×
X÷=×4x-3×9=29x+x=4
X-21×=4
6X+5=13.4X-X=4χ-6=38
5X=X=X÷=
X÷=12X=X=×
X÷=÷X-0.25==30%
4+0.7X=102X+X=42X+X=105
X-X=400X-0.125X=8=
X+X=18X×(+)=x-0.375x=
x×+=4×X-X=125X-2.4×5=8
0.36×5-x=(x-4.5)=7x-25%x=10
x-0.8x=16+620x–8.5=1.5x-x-4=21
X+25%X=90X-X=X-X=
2X+=70%X+20%X=3.6X×=20×
25%+10X=X-15%X=68X+X=121
5X-3×=X÷=126X+5=13.4
3X=X÷=
X+X=4X-6×=2÷X=
X=X=×X÷=×
4x-3×9=29x+x=4X-21×=4
6X+5=13.4
X-X=4χ-6=385X=
X=X÷=X÷=12
X=X=×X÷=÷
X-0.25==30%4+0.7X=102
X+X=42X+X=105X-X=400
X-0.125X=8=X+X=18
X×(+)=x-0.375x=x×+=4×
X-X=125X-2.4×5=80.36×5-x=
(x-4.5)=7x-25%x=10X+25%X=90
x-0.8x=16+620x–8.5=1.5x-x-4=21
X-X=X-X=2X+=
70%X+20%X=3.6X×=20×25%+10X=
X-15%X=68X+X=1215X-3×=
3X=
X÷=X+X=4X-6×=2
÷X=X=X=×
X÷=×4x-3×9=29x+x=4
X-21×=4
6X+5=13.4X-X=4χ-6=38
5X=X=X÷=
X÷=12X=X=×
X÷=÷X-0.25==30%
4+0.7X=102X+X=42X+X=105
X-X=400X-0.125X=8=
X+X=18X×(+)=x-0.375x=
x×+=4×X-X=125X-2.4×5=8
0.36×5-x=(x-4.5)=7x-25%x=10
x-0.8x=16+620x–8.5=1.5x-x-4=21