班级 姓名 成绩 2233X- 7 X= 2X + 5 = 5 70%X + 20%X = 3.6
4
X×35=20×14
X+38X=121 5X
6X+5 =13.4 X÷2=
7716
25% + 10X = 45 X - 15%X = 68
-3×
5=5217 34X1438 3X=X+78X=34 23X÷14=12 38 4X-6×23=2
123
÷X= 3 X = 25 8 X =
1×16
510 X÷ 635=2645×1325
3X-21×2103=4
6X+5 =13.4
5X=1519
5729 4x-3 ×9 = 29 x14x20 2 X-13
53 X=10 821X=415 X65112x + 16x = 4
2(x2.6)84χ-6=38 ÷45=1528
2X÷1=12 34 3X=25 8X=1×16
5729651 X÷626=÷13 X-0.25=1
X=30%
354525
4+0.7X=102
X-38X=400
X+37 X=18 X
x×23+12=4×38 423X+12X=42 X+ X-0.125X=8 ×( 1313
6 + 8 )=12 X-37X=12 414X=105
36 =
3X4 x-0.375x=565 X-2.4×5=8
3321
0.36×5- x = (x- 4.5) = 7 x- 25%x = 10
45
x- 0.8x = 16+6 20 x
X+25%X=90 3– 8.5= 1.5 X-38
7 X= 9 2x- 4
5 x -4= 21
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