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60,8 : ( 5,3x -2,15 ) = 5

60,8=5*(5,3х-2,15)60,8=26,5х-10,7526,5х=71,55х=715,5/265х=2,7

60.8:(5.3-2.15)=55.3х-2.15=60.8:55.3х-2.15=12,165.3х=12.16+2.155.3х=14.31х=14.31:5.3х=2.7проверка:60.8:(5.3*2.7-2.15)=560.8:(14.31-2.15)=560.8:12.16=55=5