i-4%/5%-4%=104-108.11/100-108.11怎么求i是多少

先把百分数化为小数:4%=0.04；5%=0.05。原式变为：
i-0.04/0.05-0.04=104-108.11/100-108.11两边先分别计算：
i-0.8-0.04=104-1.0811-108.11
i-0.84=-5.1911
i=-4.3511