# Actividad 2.docx - Fundamentos de matemticas Emmanuel...

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Fundamentos de matemáticas Emmanuel Ramses Ochoa Medina Ing. David López Treviño Actividad A8-C13 México D.F a 28 de Julio 2017

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Actividad A8-C13 Problema 1: 3x-4y=6 5x+9y=10 D = | 3 4 5 9 | = ( 3 ) ( 9 ) ( 4 ) ( 5 ) = 27 −(− 20 )= 47 D X = | 6 4 10 9 | = ( 6 ) ( 9 ) ( 4 ) ( 10 ) = 54 −(− 40 )= 94 D Y = | 3 6 5 10 | = ( 3 ) ( 10 ) ( 6 ) ( 5 ) = 30 30 = 0 x = D X D = 94 47 = 2 Y = D Y D = 0 47 = 0 Problema 2: 2x - 2y = 2 6x-5y=1 D = | 2 2 6 5 | = ( 2 ) ( 5 ) ( 2 ) ( 6 ) = ( 10 ) ( 12 ) =− 10 + 12 = 2 D X = | 2 2 1 5 | = ( 2 ) ( 5 ) ( 2 ) ( 1 ) = ( 10 ) ( 2 ) =− 10 + 2 =− 8 D Y = | 2 2 6 1 | = ( 2 ) ( 1 ) ( 2 ) ( 6 ) = 2 12 =− 10 x = D X D = 8 2 =− 4
Y = D Y D = 10 2 =− 5 Problema 3: Juan y Felipe desean hacer paletas de chocolate para vender. El costo por hacer una paleta grande es de \$5 y una chica es de \$3. Si desean hacer 150 paletas y sólo
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