Practica + - page 19

1171
25
Ecuaciones
Ecuaciones de primer grado
.
Resuelve estas ecuaciones de primer grado.
a)
4
x
8
+
6
x
2
+
3
x
=
6
+
7
x
+
2
x
e)
8
x
+
4
7
x
+
9
=
3
3
x
2
b)
2(
x
3)
+
5(3
x
+
1)
+
4
=
9
x
+
3(3
x
8)
f)
3
x
+
5(6
x
4 )
4(3
+
2
x
)
=
3(
3
x
+
4 )
+
10
c)
2
+
x
+
3
x
+
2
5
=
7
x
+
6
10
g)
6
x
4
6
+
x
2
3
+
1
=
2
x
3
+
x
1
2
d)
7
2
x
9
+
2(
x
2)
3
2
3
=
3
x
9
x
h)
6
x
+
5
4
3
2
x
4
6
+
x
+
2
4
⎜⎜⎜⎜
⎟⎟⎟⎟
=
3
x
+
7
4
4
x
+
6
x
+
3
x
7
x
2
x
=
6
+
8
+
2
4
x
=
16
x
=
16
4
x
=
4
8
x
7
x
+
3
x
=
3
2
4
9
4
x
=
12
x
=
12
4
x
=
3
3
x
+
30
x
20
12
8
x
=
9
x
12
+
10
3
x
+
30
x
8
x
9
x
=
12
+
10
+
20
+
12
10
x
=
30
x
=
30
10
x
=
3
6
6
x
4
6
+
x
2
3
+
1
⎜⎜⎜⎜
⎟⎟⎟⎟
=
6
2
x
3
+
x
1
2
⎜⎜⎜⎜
⎟⎟⎟⎟
6
x
4
+
2(
x
2)
+
6
=
2
2
x
+
3(
x
1)
6
x
4
+
2
x
4
+
6
=
4
x
+
3
x
3
6
x
+
2
x
4
x
3
x
=
3
+
4
+
4
6
x
=
1
6
x
+
5
4
3
2(2
x
4 )
12
+
3(
x
+
2)
12
⎜⎜⎜⎜
⎟⎟⎟⎟
=
3
x
+
7
4
6
x
+
5
4
3
4
x
8
12
+
3
x
+
6
12
⎜⎜⎜⎜
⎟⎟⎟⎟
=
3
x
+
7
4
6
x
+
5
4
3
7
x
2
12
=
3
x
+
7
4
6
x
+
5
4
7
x
2
4
=
3
x
+
7
4
6
x
+
5
(7
x
2)
=
3
x
+
7
6
x
+
5
7
x
+
2
=
3
x
+
7
6
x
7
x
3
x
=
7
5
2
4
x
=
0
x
=
0
2
x
6
+
15
x
+
5
+
4
=
9
x
+
9
x
24
2
x
+
15
x
9
x
9
x
=
24
+
6
5
4
x
=
27
x
=
27
10
2
+
x
+
3
x
+
2
5
⎜⎜⎜⎜
⎟⎟⎟⎟
=
10
7
x
+
6
10
20
+
10
x
+
2(3
x
+
2)
=
7
x
+
6
20
+
10
x
+
6
x
+
4
=
7
x
+
6
10
x
+
6
x
7
x
=
20
4
+
6
9
x
=
18
x
=
18
9
x
=
2
9
7
2
x
9
+
2(
x
2)
3
2
3
⎜⎜⎜⎜
⎟⎟⎟⎟
=
9
3
x
9
x
⎜⎜⎜⎜
⎟⎟⎟⎟
7
2
x
+
6(
x
2)
6
=
3
x
9
x
7
2
x
+
6
x
12
6
=
3
x
9
x
2
x
+
6
x
+
x
+
9
x
=
3
7
+
12
+
6
14
x
=
14
x
=
14
14
x
=
1
1...,9,10,11,12,13,14,15,16,17,18 20,21,22,23,24,25,26,27,28,29,...44
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