(1+0.25+0.39) X(0.25+0.39+0.87) - (1+0.25+0.39+0.87) X(0.25+0.39)는 어떻게 계산하나요?결과를 포함한 손쉬운 방법으로

(1+0.25+0.39) X(0.25+0.39+0.87) - (1+0.25+0.39+0.87) X(0.25+0.39)는 어떻게 계산하나요?결과를 포함한 손쉬운 방법으로

(1+0.25+0.39)X(0.25+0.39+0.87)-(1+0.25+0.39+0.87)X(0.25+0.39)=(1+0.25+0.39)X(0.25+0.39+0.87)-(1+0.25+0.39)X(0.25+0.39)+0.87X(0.25+0.39)=(1+0.25+0.39)X(0.25+0.39)+(1+0.25+0.39)X0.87-(1+0.25+0.39)X(0.