4x+0.5*5=9.5 0.25x*3=0.3x20.25x+3=0.3x+2

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4x+0.5*5=9.5 0.25x*3=0.3x20.25x+3=0.3x+2
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4x+0.5*5=9.5 0.25x*3=0.3x20.25x+3=0.3x+2
4x+0.5*5=9.5 0.25x*3=0.3x2
0.25x+3=0.3x+2

4x+0.5*5=9.5 0.25x*3=0.3x20.25x+3=0.3x+2
4x+0.5*5=9.5
4x+2.5=9.5
4x=9.5-2.5
4x=7
x=7/4
7
____(四分之七)
x= 4
0.25X*3=0.3*2
0.75X=0.6
x=0.6/0.75
x=0.8

4x+0.5*5=9.5
4x+0.25=9.5
移项,得4x=9.5-0.25
合并同类项,得4x=9.25
系数化为一,得x=2.3125
0.25x*3=0.3x2
0.75x=0.6
系数化为一,得x=0.8

4x+0.5*9=9.5
解:4x=9.5-0.5*9
x=(9.5-0.5*9)/4
x=5/4=1.2
0.25x*3=0.3x2 (0.3x2还是0.3*2)
0.25x=0.3*2/3
x=0.3*2/3/0.25=??