Respuestas
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
x = -15
Comprobación
7(-15)+5 = -100
-105+5 = -100
-100 = -100
Ejercicio 11
-12x-15 = 9
-12x = 9+15
-12x = 24
x = 24/-12
x = -2
Comprobación
-12(-2)-15 = 9
24-15 = 9
9 = 9
Ejercicio 12
5x-14 = -74
5x = -74+14
5x = -60
x = -60/5
x = -12
Comprobación
5(-12)-14 = -74
-60-14 = -74
-74 = -74
Ejercicio 13
13x-13 = 169
13x = 169+13
13x = 182
x = 182/13
x = 14
Comprobación
13(14)-13 = 169
182-13 = 169
169 = 169
Ejercicio 14
x-3 = -13
x = -13+3
x = -10
Comprobación
-10-3 = -13
-13 = -13
Ejercicio 15
6x+10 = -38
6x = -38-10
6x = -48
x = -48/6
x = -8
Comprobación
6(-8)+10 = -38
-48+10 = -38
-38 = -38
Ejercicio 16
6x-9 = -27
6x = -27+9
6x = -18
x = -18/6
x = -3
Comprobación
6(-3)-9 = -27
-18-9 = -27
-27 = -27
Ejercicio 17
-3x+3 = -33
-3x = -33-3
-3x = -36
x = -36/-3
x = 12
Comprobación
-3(12)+3 = -33
-36+3 = -33
-33 = -33
Ejercicio 18
-4x+8 = 4
-4x = 4-8
-4x = -4
x = -4/-4
x =
Comprobación
-4(1)+8 = 4
-4+8 = 4
4 = 4
Ejercicio 19
-14x-7 = 77
-14x = 77+7
-14x = 84
x = 84/-14
x = -6
Comprobación
-14(-6)-7 = 77
84-7 = 77
77 = 77
Ejercicio 20
8x-5 = -109
8x = -109+5
8x = -104
x = -104/8
x = -13
Comprobación
8(-13)-5 = -109
-104-5 = -109
-109 = -109