1/5÷[(2/3+1/5)×15] 简便方法计算

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1/5÷[(2/3+1/5)×15] 简便方法计算

1/5÷[(2/3+1/5)×15] 简便方法计算
1/5÷[(2/3+1/5)×15] 简便方法计算

1/5÷[(2/3+1/5)×15] 简便方法计算
1/5÷[(2/3+1/5)×15]
=1/5÷(2/3x15+1/5x15)
=1/5÷(10+3)
=1/5÷13
=1/65