factura de compras

                                                                                                                                                                                                                                                                                       

solucion del subtotal:+d1+d2+d3+d4+d5+d6+d7+d8+d9=27,590

solucion del 15% de descuento:+27,590*15/100=4,139

solucion del total:+27,590-4,139=23,452