【-1.53*0.75-0.53*(-4分之3)】除以(-3)的平方

问题描述:

【-1.53*0.75-0.53*(-4分之3)】除以(-3)的平方

(-1.53×3/4+0.53×3/4)÷9
=3/4×(-1.53+0.53)÷9
=(-3/4)÷9
=-1/12