要写清楚过程,快,有赏计算:-5+-10-16-20 (-2)+(3.2)-3.2+(-8) -2/3+(-1/6)-(-1/4)-1/2

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要写清楚过程,快,有赏计算:-5+-10-16-20 (-2)+(3.2)-3.2+(-8) -2/3+(-1/6)-(-1/4)-1/2
要写清楚过程,快,有赏
计算:-5+-10-16-20 (-2)+(3.2)-3.2+(-8) -2/3+(-1/6)-(-1/4)-1/2

要写清楚过程,快,有赏计算:-5+-10-16-20 (-2)+(3.2)-3.2+(-8) -2/3+(-1/6)-(-1/4)-1/2
=-15-36 =(-2)+(-8)+3.2-(3.2) =-4/6+(-1/6) -(1/4)-2/4
=-51 =-10 =-5/6-1/2-(-1/4)
=2/6-(-1/4)
=4/12-(-3/12)
=1/12

-1/12

  1. = -15-36

    = -51 

  2. =1.2-11.2

    = -10

  3. = -8/12+(-2/12)-(-3/12)-6/12

    = -13/12