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xï¼ x= 2x + = 70%x+ 20%x = 3.6 xÃ=20Ã 25% + 10x =
x -15%x =68 xï¼xï¼121 5xï¼3Ãï¼ x÷ï¼12 6xï¼5 =13.4
x + x = 4 4xï¼3 Ã9 = 29 xï¼x= 4xï¼6Ã=2
÷x = x = à x÷ =Ã
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解:100x=400-200
x=200÷100
x=2
50x+100=200
解: 50x=200-100
x=100÷50
x=2
10x+20=40
解:10x=40-20
x=20÷10
x=2本回答被提问者采纳
5/9+x=23
6x-x=0.5
x-4/9=2/3
4x+20=3.9
4x+12=50
17+8.3 4x=50-12
4x=38
2.3x-1.02=0.36
24 x=0.6
X-5.7=2.15
5X-2X=18
3X+0.7=5
3.5×2= 4.2+x
26×1.5= 2x+10
0.5×16―16×0.2=4x
13 9.25-X=0.403
16.9÷X=0. 3
X÷0.5=2.6
x+13=33
3 - 5x=80
1.8 +6x=54
6.7x -60.3=6.7
9 +4x =40
0.2x-0.4+0.5=3.7
9.4x-0.4x=16.2本回答被网友采纳