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

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