χ-3χ=6 6×1-1χ=1
551222 6χ+5 =13.4 3χ=3
8
2233χ- χ= 2χ + =
3χ+1=1442
7118χ=16
5χ-3×710=75
8χ-1×3=4544χ-45χ=12
χ×(374+23)=
24 4+1χ=
95210 χ-6)×56=25
74
χ×35=20×14 5χ-3×5=5217
χ÷27=716 55χ+38χ=121
23χ÷14=12
χ+78χ=34
(4χ-6×2123
=2 ÷χ= 213
6χ+5 =13.4 χ- χ=
3
3 χ = 25572 χ÷ 61335=2645×25 4
12χ + 16χ = 4
χ+37 χ=18 510
89 χ = 16×1651
χ-3 ×9 = 29
310χ-21×23=4
χ×( 136 + 13
8 )=12
4χ-6=38 5
8421χ=
15 χ-0.25=14
233χ÷1=12 χ=254572 4+0.7
8χ=196×1651 5310
χ=1519
χ÷45=1528
χ=102
χ÷
635=2645÷1325