9/5*3.14-(-9/5)*6.96+9/5*(-1.1)计算过程

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9/5*3.14-(-9/5)*6.96+9/5*(-1.1)计算过程

9/5*3.14-(-9/5)*6.96+9/5*(-1.1)
=9/5*(3.14+6.96-1.1)
=9/5*9
=5