Analisis pengaruh variabel capital adequacy ratio, beban operasional pendapatan operasional, tingkat imbal hasil pembiayaan, inflasi dan kurs USD terhadap kualitas pembiayaan bank umum syariah dan unit usaha syariah tahun 2015-2017 = The effect analysis of capital adequacy ratio, operational income operational expenses, financing yields, inflations and exchange rate on quality financing of sharia commercial banks and sharia business units year 2015-2017