2° Sem del 8 al 12 de Febrero

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ESCUELA SECUNDARIA No. 7 “MARGARITA MAZA DE JUÁREZ” Ciclo escolar 2020 - 2021 Segundo Trimestre MATEMÁTICAS 2° Nombre _________________________________________________________Grupo_______N.L.______ Aprendizaje esperado: Resuelve

problemas mediante la solución algebraica de sistemas de dos ecuaciones lineales con dos incógnitas por el método de sustitución. MÉTODO DE SUSTITUCIÓN

Resuelve los siguientes sistemas de ecuaciones por el método de SUSTITUCIÓN

x–y=2 2x + 3y = 19

5x + 3y = 13 x – y = -11

x + 2y = 8 2x + y = 7

x – 2y = 11 x + 5y = -17

2b + c = 1 -5c – 6b = -9

2m – 5n = 14 5m + 2n = -23

2x + y = 8 3x – y = 7

2x -2y = -5 3x + 4y = -11

3x + 4y = 8 8x – 9y = -77

3m – 5n =1 9m + 15n = 9

-m + n = -1 4m – 2n = 5

6u – 3v = 7 8u – 5v = 10

2x + y = -10 x – 3y = 2

5x + 3y = 13 4x + 6y = 14

2x + y = 10 8x + 2y = 20

x+y=5 x–y=1