嗯 这道题很难吗 是不是我理解错了
(0.4x+0.9/0.5 )- (x-5/2) - (0.03+0.02x/0.03) =0
0.4x+1.8-x+2.5-0.03-(2/3)*x=0
-(19/15)*x=-4.27
x=
剩下的你用计算器就可以了吧
解方程(0.4x+0.9/0.5 )- (x-5/2) - (0.03+0.02x/0.03) =0
1个回答
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