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Ejercicios de Suma y Resta de expresiones algebraicas

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by

Andrés Felipe Cárdenas Murcia

on 25 February 2014

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Transcript of Ejercicios de Suma y Resta de expresiones algebraicas

1)
9a
-3b
+5
-a
-b
+4
-5a
+4b
-9
=

3a
9a-a-5a
=

3a
-3b+4b-b= 0
+5+4-9
= 0

2)
x
+y
+z
-2x
-6y
+3z
+x
+5y
-8z
= -4z
x-2x+x
=0
+y+5y-6y=0
+z+3z-8z
=-4z

3)
Ejercicios y soluciones
Ejercicios de Suma y Resta de expresiones algebraicas
1/2a

+ 1/3
ab
+1/2
ab
= 2+3= 5
ab

+1/4b
2
2
___ __
6
6
4) -7a
-4b
+6c
+10a
-20b
-8c
-5a
+24b
+2c
= -2a
-7a+10a-5a=-2a
-4b-20b+24b
=0
+6c-8c+2c
=0

5)

a
+2ab-1ab-5ab

+b +2b
=
3b +2b 5b
2
2
2
_ _ _ =__________= _
ab
3
6
6
1
3
2
______= _
3
6
4ab-1ab-5ab
_
3
3
2
2
6) a
-5a
+8
-a
+10a
-30
-6a
+5a
-50
= -6a +10a-72
a +a -6a =-6a
-5a+5a+10a
=+10a
+8-30-50
=-72

7) a
+2a
-a

+4
= a +2a-a +4
2
2
2
2
2
2
2
2
3
2
3
2
Aún no entiendo...
8) -5x
-2y
-3z
+7x
-3y
+5z
-8x
+5y
-3z
=-6x-z
-5x+7x-8x=-6x
-2y-3y+5y
=0
-3z+5z-3z
=-z

9)

1 x -1x= 2x-x
4
+2y+1y=10y+3y 13y

-6

10) x
-4x y
+5x
-7xy

-4x y
-5x =x -8x y-7xy
_ _
2
4
____=1
_x
4
_ _
3
5
______=___
15
15
2
2
2
2
2
3
3
3
3
-4x y-4x y
=-8x y
x +5x -5x =x
2
2
2
3
3
3
3
11)
3x-1 x= 5 x

-4+6
=+2
- 1 y + 1 y -y= -1 y

12)
2
2
_ __
__
2
__
2
__
2
3
__
4
x
2
2 y +1y -1y
__ _ _
3
3
9
2
2
2
=
_______=__
9
6y+1y-3y
9
4
y
2
Exposicion de algebra
Andrés felipe Cárdenas Murcia.
801.
Felix Rodriguez
2014.
-1 xy+ 1 xy
__ __
3
6
=
_____
6
-2xy+1xy
=-1xy
__
6
13)x
-3x

+x

+4x
=x
-3x

+x

+4x
4
2
3
14)4a
-5b
-3a
+6b
-8
-a
+b
=2b-8
4a-3a-a=0
-5b+6b+b
=2b
-8

15) 3x
-5y
+6
-6x
+8
-20y-20y
+12x
-12
= 9x-45y+2
3x+12x-6x=9x
-5y-20y-20y
=-45y
+8-12+6
=+2
Despues de tanto he aprendido.
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