全过程··74*1042/37*(-9/37)/(-521)-38*36/3774*1042/37*(-9/37)/(-521)-38*36/37

问题描述:

全过程··74*1042/37*(-9/37)/(-521)-38*36/37
74*1042/37*(-9/37)/(-521)-38*36/37

74*1042/37*(-9/37)/(-521)-38*36/37
=74/37*1042/(-521)*(-9)/37-38*36/37
=2*(-2)*(-9)/37-38*36/37
=36/37-36/37*38
=36/37*(1-38)
=36/37*(-37)
=-36