Ejercicio 1
Enviado por hola.quehaces • 21 de Febrero de 2014 • Tareas • 755 Palabras (4 Páginas) • 205 Visitas
Ejercicio 1
x-15 = -27
x = -27+15
x = -12
Comprobación
-12-15 = -27
-27 = -27
Ejercicio 2
-11x+12 = 144
-11x = 144-12
-11x = 132
x = 132/-11
x = -12
Comprobación
-11(-12)+12 = 144
132+12 = 144
144 = 144
Ejercicio 3
-8x-15 = -111
-8x = -111+15
-8x = -96
x = -96/-8
x = 12
Comprobación
-8(12)-15 = -111
-96-15 = -111
-111 = -111
Ejercicio 4
6x-10 = -16
6x = -16+10
6x = -6
x = -6/6
x = -1
Comprobación
6(-1)-10 = -16
-6-10 = -16
-16 = -16
Ejercicio 5
-15x-6 = 9
-15x = 9+6
-15x = 15
x = 15/-15
x = -1
Comprobación
-15(-1)-6 = 9
15-6 = 9
9 = 9
Ejercicio 6
12x+12 = 72
12x = 72-12
12x = 60
x = 60/12
x = 5
Comprobación
12(5)+12 = 72
60+12 = 72
72 = 72
Ejercicio 7
-10x+9 = -81
-10x = -81-9
-10x = -90
x = -90/-10
x = 9
Comprobación
-10(9)+9 = -81
-90+9 = -81
-81 = -81
Ejercicio 8
5x-15 = 15
5x = 15+15
5x = 30
x = 30/5
x = 6
Comprobación
5(6)-15 = 15
30-15 = 15
15 = 15
Ejercicio 9
2x-13 = -19
2x = -19+13
2x = -6
x = -6/2
x = -3
Comprobación
2(-3)-13 = -19
-6-13 = -19
-19 = -19
Ejercicio 10
7x+5 = -100
7x = -100-5
7x = -105
x = -105/7
...