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设电影票原价x元,观众a人。ax(1+2/5)=a(1+1/2)(x-3)ax(7/5)见=a(3/2)(x-3)x(频席垂攻就西7/5)=(3/2)(问答x-3)14x=15x-45x=45
设原来票价每张x元。解1(1+1/2)(x续联听-3)=(1+2/5)x1.5(x-3)=1.4x1.5x-4.5=1.4x1.5x-1.4x=4.50.1x=4.5x=45答……解2(x-3)/x=(1+2/5)/(1+1/2)1-3/x=1.4/1.53/x=1-14/15=1/15x=3*15=45答……无副题