- Ejercicio 7
basta realizar la suma algebraica de los coeficientes de los términos
que tengan la misma parte literaria:
-
x + 2 x = 3 x
-
8 a + 9 a = 17 a
-
11 b + 9 b = 20 b
-
– b – 5 b = – 6 b
-
– 9 m – 7 m = – 16 m
-
– 8 m – m = – 9 m
-
4
a
x
+ 5
a
x
= 9
a
x
-
6 a
x + 1
+ 8 a
x + 1
= 14 a
x + 1
-
– m
x + 1
– 5 m
x + 1
= – 6 m
x + 1
-
– 3 a
x – 2
– a
x – 2
= – 4 a
x – 2
-
1
2
a +
1
2
a =
a + a
2
=
2 a
2
= a
-
3
5
a b +
1
10
a b =
6 a b + a b
10
=
7 a b
10
-
1
3
x y +
1
6
x y =
2 x y + x y
6
=
3 x y
6
=
x y
2
-
–
1
5
x y –
4
5
x y =
– x y – 4 x y
5
= –
5 x y
5
= – x y
-
–
5
6
a
2
b –
1
8
a
2
b =
– 20
a
2
b – 3
a
2
b
24
= –
23
a
2
b
24
-
– a –
7
8
a =
– 8 a – 7 a
8
= –
15 a
8
-
8 a + 9 a + 6 a + = 23 a
-
15 x + 20 x + x = 36 x
-
– 7 m – 8 m – 9 m = – 24 m
-
–
a
2
b –
a
2
b – 3
a
2
b = – 5 –
a
2
b
-
a
x
+ 3
a
x
+ 8
a
x
= 12
a
x
-
– 5
a
x + 1
– 3
a
x + 1
– 5
a
x + 1
= – 13
a
x + 1
-
a +
1
2
a +
2
3
a =
6 a + 3 a + 4 a
6
=
13 a
6
-
– x –
2
3
x –
1
6
x =
– 6 x – 4 x – x
6
= –
11 x
6
-
1
5
a x +
3
10
a x + a x =
2 a x + 3 a x + 10 a x
10
=
15 a x
10
=
3 a x
2
-
–
3
4
a
2
x –
5
6
a
2
x –
a
2
x =
– 9
a
2
x – 10
a
2
x – 12
a
2
x
12
= –
31
a
2
x
12
-
11 a + 8 a + 9 a + 11 a = 39 a
-
m
x + 1
+ 3 m
x + 1
+ 4 m
x + 1
+ 6 m
x + 1
= 14 m
x + 1
-
– x
2
y – 8 x
2
y – 9 x
2
y – 20 x
2
y = – 38 x
2
y
-
– 3 a
m
– 5 a
m
– 6 a
m
– 9 a
m
= – 23 a
m
-
1
2
a +
1
4
a +
1
8
a + a =
4 a + 2 a + a + 8 a
8
=
15 a
8
-
2
5
a x +
1
2
a x +
1
10
a x +
1
20
a x =
8 a x + 10 a x + 2 a x + a x
20
=
21 a x
20
-
0.5 m + 0.6 m + 0.7 m + 0.8 m = 2.6 m
-
–
1
7
a b –
1
14
a b –
1
28
a b – a b =
– 4 a b – 2 a b – a b – 28 a b
28
= –
35 a b
28
= –
5 a b
4
-
–
2
3
x
3
y –
1
6
x
3
y –
1
9
x
3
y –
1
12
x
3
y =
– 24
x
3
y – 6
x
3
y – 4
x
3
y – 3
x
3
y
36
= –
37
x
3
y
36
-
a b
2
+ a b
2
+ 7 a b
2
+ 9 a b
2
+ 21 a b
2
= 39 a b
2
-
– m – m – 8 m – 7 m – 3 m = – 20 m
-
– x
a + 1
– 8 x
a + 1
– 4 x
a + 1
– 5 x
a + 1
– x
a + 1
= – 19 x
a + 1
-
1
2
a +
1
3
a +
1
4
a +
1
5
a +
1
6
a =
30 a + 20 a + 15 a + 12 a + 10 a
60
=
87
60
a =
29
20
a
-
–
1
3
a b –
1
6
a b –
1
2
a b –
1
12
a b –
1
9
a b =
– 12 a b – 6 a b – 18 a b – 3 a b – 4 a b
36
= –
43
36
a b