2.8x-0.17=0.4x+0.19
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2.8x-0.17=0.4x+0.192.8x-0.17=0.4x+0.192.8x-0.17=0.4x+0.192.4x=0.36x=0.152.4x=0.36x=0.152.8x-0.17=0.4
2.8x-0.17=0.4x+0.19
2.8x-0.17=0.4x+0.19
2.8x-0.17=0.4x+0.19
2.4x=0.36 x=0.15
2.4x=0.36
x=0.15
2.8x-0.17=0.4x+0.19
2.4x=0.36
x=0.36/2.4=0.15
2.8x-0.17=0.4x+0.19
小学六年级下册数学解方程.. 要详细的.. 还要过程 都写下来...2x+3x=60 3.6x-2.8x=12 100x-x=198 18x+2x+60 5x+6x=12.1 6.6x-5x=8 4x-x=24 1.5x-x=1 1.9x+0.4x=9.2
（X+X)+(X-X)+(X*X)+(X/X)=100
x-0.8x=0.4x=?
x+(x*0.17)=1000
X-0.4X=36
X+0.4X=21
X-0.4X=0.54
x-0.4x=0.
0.4X=X-50
X-0.4x=0.39
x*x*x*x*x=80000?
X-20%X=(44-X)怎么解X-20%X=(44-X)+2.8
0.2x+0.4x=12 x=?20x+x=420 x=?
2.8x+x=1.71 30x+15x=22.5 2.8+2x=22.6 22.6-2x=2.8 （0.23-0.19）x 40×4+2x=400 62×2+2x=358 解方程 急
0.5（x-0.4）=2.8-x怎么做
x*x*x=504 x*x*x=504
（x+x）+(x-x)+(x/x)=11.2