19x/100*x=21/100*(x-2)答案是多少
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19x/100*x=21/100*(x-2)答案是多少19x/100*x=21/100*(x-2)答案是多少19x/100*x=21/100*(x-2)答案是多少19/100*x=21/100*(x-
19x/100*x=21/100*(x-2)答案是多少
19x/100*x=21/100*(x-2)答案是多少
19x/100*x=21/100*(x-2)答案是多少
19/100*x=21/100*(x-2)
19*100*(x-2)=100x*21
1900*(x-2)=2100x
1900x-3800=2100x
200x=-3800
x=-19
（X+X)+(X-X)+(X*X)+(X/X)=100
x*(21+x)=100x*(21+x)=100
X+X+X+X+X+X+100X=1690 问：X等于多少
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100(x+4)+10x+(x+2)=21[10x+(x+2)]
3x=x+100 x=?
x*x=100x=几
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19-200x+100x*x=0
40%x+40%x-21=100%x
19-x=100-10x
19-2x=100-10x