EJERCICIOS RESUELTOS DE MATEMÁTICAS

RESOLUCIÓN DE ECUACIONES :

Ejercicio 1
-13x-7	=	3x+233
-13x-3x	=	233+7
-16x	=	240
x	=	240/-16
x	=	-15

Comprobación

-13(-15)-7	=	3(-15)+233
195-7	=	-45+233
188	=	188
		www.educa.mx

Ejercicio 2
13x+8	=	-14x-343
13x+14x	=	-343-8
27x	=	-351
x	=	-351/27
x	=	-13

Comprobación

13(-13)+8	=	-14(-13)-343
-169+8	=	182-343
-161	=	-161
		www.educa.mx

Ejercicio 3
12x+1	=	-15x-404
12x+15x	=	-404-1
27x	=	-405
x	=	-405/27
x	=	-15

Comprobación

12(-15)+1	=	-15(-15)-404
-180+1	=	225-404
-179	=	-179
		www.educa.mx

Ejercicio 4
-5x+9	=	12x+179
-5x-12x	=	179-9
-17x	=	170
x	=	170/-17
x	=	-10

Comprobación

-5(-10)+9	=	12(-10)+179
50+9	=	-120+179
59	=	59
		www.educa.mx

Ejercicio 5
-x+15	=	5x+15
-x-5x	=	15-15
-6x	=	0
x	=	0/-6
x	=	0

Comprobación

-(0)+15	=	5(0)+15
0+15	=	0+15
15	=	15
		www.educa.mx

Ejercicio 6
-6x-10	=	4x+80
-6x-4x	=	80+10
-10x	=	90
x	=	90/-10
x	=	-9

Comprobación

-6(-9)-10	=	4(-9)+80
54-10	=	-36+80
44	=	44
		www.educa.mx

Ejercicio 7
7x+10	=	-7x+94
7x+7x	=	94-10
14x	=	84
x	=	84/14
x	=	6

Comprobación

7(6)+10	=	-7(6)+94
42+10	=	-42+94
52	=	52
		www.educa.mx

Ejercicio 8
-14x-12	=	12x+92
-14x-12x	=	92+12
-26x	=	104
x	=	104/-26
x	=	-4

Comprobación

-14(-4)-12	=	12(-4)+92
56-12	=	-48+92
44	=	44
		www.educa.mx

Ejercicio 9
6x-7	=	-8x-105
6x+8x	=	-105+7
14x	=	-98
x	=	-98/14
x	=	-7

Comprobación

6(-7)-7	=	-8(-7)-105
-42-7	=	56-105
-49	=	-49
		www.educa.mx

Ejercicio 10
-12x+10	=	10x-166
-12x-10x	=	-166-10
-22x	=	-176
x	=	-176/-22
x	=	8

Comprobación

-12(8)+10	=	10(8)-166
-96+10	=	80-166
-86	=	-86
		www.educa.mx

Ejercicio 11
-9x+2	=	2x+167
-9x-2x	=	167-2
-11x	=	165
x	=	165/-11
x	=	-15

Comprobación

-9(-15)+2	=	2(-15)+167
135+2	=	-30+167
137	=	137
		www.educa.mx

Ejercicio 12
x-15	=	6x-40
x-6x	=	-40+15
-5x	=	-25
x	=	-25/-5
x	=	5

Comprobación

5-15	=	6(5)-40
5-15		30-40
-10	=	-10
		www.educa.mx

Ejercicio 13
-7x+5	=	14x+194
-7x-14x	=	194-5
-21x	=	189
x	=	189/-21
x	=	-9

Comprobación

-7(-9)+5	=	14(-9)+194
63+5	=	-126+194
68	=	68
		www.educa.mx

Ejercicio 14
-12x+2	=	2x-166
-12x-2x	=	-166-2
-14x	=	-168
x	=	-168/-14
x	=	12

Comprobación

-12(12)+2	=	2(12)-166
-144+2	=	24-166
-142	=	-142
		www.educa.mx

Ejercicio 15
3x+8	=	-12x-67
3x+12x	=	-67-8
15x	=	-75
x	=	-75/15
x	=	-5

Comprobación

3(-5)+8	=	-12(-5)-67
-15+8	=	60-67
-7	=	-7
		www.educa.mx

Ejercicio 16
11x+8	=	4x+36
11x-4x	=	36-8
7x	=	28
x	=	28/7
x	=	4

Comprobación

11(4)+8	=	4(4)+36
44+8	=	16+36
52	=	52
		www.educa.mx

Ejercicio 17
-10x-15	=	-x-60
-10x+x	=	-60+15
-9x	=	-45
x	=	-45/-9
x	=	5

Comprobación

-10(5)-15	=	-(5)-60
-50-15	=	-5-60
-65	=	-65
		www.educa.mx

Ejercicio 18
-12x+14	=	12x-82
-12x-12x	=	-82-14
-24x	=	-96
x	=	-96/-24
x	=	4

Comprobación

-12(4)+14	=	12(4)-82
-48+14	=	48-82
-34	=	-34
		www.educa.mx

Ejercicio 19
x-15	=	8x+6
x-8x	=	6+15
-7x	=	21
x	=	21/-7
x	=	-3

Comprobación

-3-15	=	8(-3)+6
-3-15		-24+6
-18	=	-18
		www.educa.mx

Ejercicio 20
-10x-13	=	-14x+7
-10x+14x	=	7+13
4x	=	20
x	=	20/4
x	=	5

Comprobación

-10(5)-13	=	-14(5)+7
-50-13	=	-70+7
-63	=	-63
		www.educa.mx