75*(x-6)+73x=73.5*(2x-6)
75x-450+73x=147x-441
75x+73x-147x=450-441
x=9
75*(x-6)+73x=73.5*(2x-6)求解详细
75*(x-6)+73x=73.5*(2x-6)求解详细
数学人气：637 ℃时间：2020-06-03 18:38:35
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