(写出计算过程)12÷(5分之3+3分之2)=?12÷【5分之3×(3分之4-1)】=?

问题描述:

(写出计算过程)12÷(5分之3+3分之2)=?12÷【5分之3×(3分之4-1)】=?

12÷(5分之3+3分之2)=?
=12÷(9/15+10/15)
=12×15/19
=180/19;
12÷【5分之3×(3分之4-1)】=?
=12÷(3/5×(1/3))
=12÷(1/5)
=60;
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