设这姿态猛笔迹桥钱为x3x*2.89%+x-(2.52%x*3*80%+x)闭弯=209.760.0867x-0.06048x=209.760.02622x=209.76x=8000
209.76÷3÷〔2.89%-2.52%×(1-20%)〕=8000(元)
x=8000