Respuestas
Respuesta:
3. 4x+3=3x+5 Sol: x=2 4. 7x+9=3+9x Sol: x=3
5. x-8=2x-11 Sol: x=3 6. x+1=2x-7 Sol: x=8
7. 6x+6=4+8x Sol: x=1 8. 9+9x=17+5x Sol: x=2
9. 2x+3=3x Sol: x=3 10. 25-2x=3x+20 Sol: x=1
11. 4x+1=3x+3 Sol: x=2 12. 5x-3=10x-6 Sol: x=3/5
13. 1+8x=-16x+31 Sol: x=5/4 14. 5x-11=15x-19 Sol: x=4/5
15. 12x-48=-15x-30 Sol: x=2/3 16. 2x+17=3x+7 Sol: x=10
17. 10-5x=x-2 Sol: x=2 18. 70-3x=4x Sol: x=10
19. 48-3x=5x Sol: x=6 20. -4x+30=-3x-10 Sol: x=40
21. 10x-15=4x+27 Sol: x=7 22. x-3(x-2)=6x-2 Sol: x=1
23. 3x+1=6x-8 Sol: x=3 24. 3x-7=2(x+1) Sol: x=9
25. 47-3x=5+11x Sol: x=3 26. 2(2+4x)=3+12x Sol: x=1/4
27. 30-9x=-7x+21 Sol: x=9/2 28. 5x=7(5x-3)+3 Sol: x=3/5
29. 3x-10=2x+1 Sol: x=11 30. 2(x-5)=3x-17 Sol: x=7
31. 25-2x=3x-35 Sol: x=12 32. 2+5(x-13)=x-3 Sol: x=15
33. 75-5x=3x+3 Sol: x=9 34. 2x-1=3(2x-15) Sol: x=11
35. 5+8x=2x+20 Sol: x=5/2 36. 2(x-2)=-(4-x) Sol: x=0
37. 2y-3=y+5 Sol: y=8 38. 2(3x-49)=-x+14 Sol: x=16
39. 2-6x=3x-1 Sol: x=1/3 40. 20=2x-(10-4x) Sol: x=5
41. 60x-1=3(1+12x) Sol: x=1/6 42. 5(x-1)+10(x+2)=45 Sol: x=2
43. 2x+3(2x-1)=x+67 Sol: x=10 44. 12x+3(2x-4)=60 Sol: x=4
45. 3-2x(5-2x)=4x2
+x-30 Sol: x=3 46. 3x-(x+1)=x-2 Sol: x=-1
47. 3[2x-(3x+1)]=x+1 Sol: x=-1 48. x-3(x+5)=3x+10 Sol: x=-5
49. (x-15)=3(x-19) Sol: x=21 50. 3(2-x)=18x-1 Sol: x=1/3
51. 3(x+4)=4x+1 Sol: x=11 52. 10+5(x-3)=3(x+1) Sol: x=4
53. 2(3-4x)=2x-9 Sol: x=3/2 54. 10-9x=4(x-4) Sol: x=2
55. 2(3x+2)=4[2x-5(x-2)] Sol: x=2 56. 15x=2(1+9x)-3 Sol: x=1/3
57. 3(12-x)-4x=2(11-x)+9x Sol: x=1 58. x+3=3(2x-4) Sol: x=3
59. + x = 2 4 +
2
3x 60.
3
6-x
-
2
x
= 8 - x
61. 3 +
7
x
=
4
3x
- x 62. x = 3 +
3
x+5
2
63.
3
1
+
3
2x = 6 -
4
9x 64. 11 - x =
4
3x
-
6
5x
65. 1 +
6
2x = 7 -
5
3x 66. (x 6) -
9
5
10 - x =
67.
9
2x
10 = x + +
3
x
68.
3
x
12 = 1 + -
2
3x
69. 3 - x =
2
x
+
5
x
70.
4
5x 6 -
4x = 7 -
71. 5x = 4 -
3
x+2
72.
8
7
=
3x - 20
2x 10-
73. 21 = x +
6
3x
+
4
x
74.
6
5
-
2
5x
=
6
13
-
4
x
75. 94 =
5
x
+
4
x
+
3
x
76. 16 +
5
x
10 + =
3
x
77. 3 -
x+3
10
=
x+3
7-x
78. 2x = 3 -
5
x
3x 9 - +
79. 6 =
x+1
_ 12
5
3x
80.
30
x
- 2 -
5
2x
= 5 +
4
x
81. 1 -
x -1
x
=
x+1
3
82.
6
- 2x 18 +
(x 5 - - 20) =
8
5x
83.
2
x
x = +
5
x+1
x + 84. + 2x
4
3-x
1- = +
8
7 - x
3x -
85. - = 9
8
5x
-
4
2x
+
10
3x - 8 86.
3
x
1 = +
6
3+x
+
2
x+1
87. 0 =
10
x
-
2
3x 2 - +
5
3x 88. 3 =
x+5
3+4x
+
x+5
10
89.
x 1-
2x+2
=
x+1
x+3
-
1-x
x+2
2
90.
4
5x 1-
=
4
3x 1-
-
6
7x 3-
91. 1 -
3
4x - 2
=
4
3x 1-
-
6
4x 3 -
92.
12
7x-3
2x = x + +
6
x+3
-
4
(x 3 +1)
93. 3 -
10
x
=
3
x
- - 2
5
2x 94. 0 =
x+2
5
-
x+10
15
95.
x+1
7
+
1-x
2
=
x 1-
3x 3-
+
x+1
2
2
96.
4
3x - 2
= 2 -
9
3x
-
4
2x+1
97.
1-x
5
=
x +3x 4-
3
-
x+4
3
-
1-x
5
2
98.
x+2
18
=
x - 4
12x+6
-
-x 2
15
2
99.
a
b - ab (a+ (b x) - - x) (b a +a) + x + a =
2
2 2
100.
x - a
1
=
x+a
1
+
-x a
1
2 2
101.
2
1 x +
= 2 -
2a
x
102. 2 =
x+1
1-x
- 2
1-x
x+1
1 +
103.
2
5x - 2
= x
4
1
-
2
-x 5
+
3
x
104.
2
(x-3-x +2)
=
2
(x 3 - 2)
-
3
-x 3
105.
2
x+3
-
3
-x 3
=
2
-x 3
-
5
-x 3
106.
3
9 - 2x 1 = +
6
5+ x
+
2
x+1
107. (x = - 2 ) 4 -
2
-x 2
-
3
x+2
(x x - 2) -
2
108. (x = - 2 ) 4x -
2
-x 2
-
3
x+2
(x x - 2) -
2
109.
2x
3
=
(x x +1) (x 1)-
x - 2x+1
2
Sol: 59. x=4; 60. x=12; 61. x=28; 62. x=1; 63. x=4; 64. x=12; 65. x=30; 66. x=15; 67.
x=9; 68. x=6; 69. x= 10; 70. x=2; 71. x=1; 72. x=12; 73. x=12; 74. x=-16/27; 75. x=120; 76.
x=45; 77. x= 2; 78. x=5; 79. x=5; 80. x=60; 81. x=2; 82. x=24; 83. x=2/3; 84. x=-1; 85. x=40;
86. x=0; 87. x=1; 88. x=2; 89. x=3; 90. x=0; 91. x=1; 92. x=0; 93. x=30; 94. x=2; 95. x=0; 96.
x=-15/7; 97. x=0; 98. x=4; 99. x=b/a; 100. x=1/2; 101. x=5a/(1-a); 102. x=3; 103. x=-18/23;
104. x=27/7; 105. x=51/2; 106. x=2; 107. x=-2/7; 108. x=22/31; 109. x=-5
Explicación paso a paso: