(-38/3)/1.4-(-25/3)/(-1.4)+61/3/1.4 简便运算写出算的过程

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(-38/3)/1.4-(-25/3)/(-1.4)+61/3/1.4 简便运算写出算的过程
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(-38/3)/1.4-(-25/3)/(-1.4)+61/3/1.4 简便运算写出算的过程
(-38/3)/1.4-(-25/3)/(-1.4)+61/3/1.4 简便运算
写出算的过程

(-38/3)/1.4-(-25/3)/(-1.4)+61/3/1.4 简便运算写出算的过程
原式化为:
(-38/3)/1.4-(25/3)/1.4+(61/3)/1.4
=(-38-25+61)/3/1.4
=-2/3/(7/5)
=-10/21