(7/9-5/6+1/18)×18-1.45×6+39.5×6

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(7/9-5/6+1/18)×18-1.45×6+39.5×6

(7/9-5/6+1/18)×18-1.45×6+39.5×6
(7/9-5/6+1/18)×18-1.45×6+39.5×6

(7/9-5/6+1/18)×18-1.45×6+39.5×6

(7/9-5/6+1/18)×18-1.45×6+39.5×6=(7/9×18-5/6×18+1/18×18)-(1.45-39.5)×6=(14-15+1)-(-38.05)×6=0-(-228.3)=0+228.3=228.3