%*X+20=X方程75怎么解
问题描述：
%*X+20=X方程75怎么解
答
X=70/(1+150/%)=28
X=15/30%=45
X=55/(1+25%)X=44
X=(50-20)/40%=75
X=40/(1-80%)=200
X=25.2/63%=40.6
X=140/(55%-20%)=400
X=(7.24-7)/24%=100
X=5/(1-75%)=20