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La Solución Es X 3

The document contains 10 math word problems with solutions. Each problem involves solving equations for unknown variables x and y. The solutions are provided as well.

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hector
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38 views5 pages

La Solución Es X 3

The document contains 10 math word problems with solutions. Each problem involves solving equations for unknown variables x and y. The solutions are provided as well.

Uploaded by

hector
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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1.

6x 7 = 2x + 5

6x 2x = 5 + 7

4x = 12

x =12/4

La solucin es x = 3

2. (13 + 2x)/(4x + 1 ) = 3/4

(13 + 2x)4 = 3(4x + 1 )

52 + 8x = 12x + 3

52 3 = 12x 8

49 = 4x

La solucin x = 49/4

3. (3 + 5x)/5 = (4 x)/7

(3 + 5x)7 = (4 x) 5

21 + 35x = 20 5x

35x + 5x = 20 21

40x = -1

La solucin x = -1/40

4. 4x 3 = -12x + 5

4x +12x = 5 + 3
16x = 8

x = 8/16 = 1/2

La solucin x = 1/2

5. 6x +2 3x = 7x + 4

3x + 2 = 7x + 4

3x 7x = 4 2

-4x = 2

x = 2/-4

La solucin x = -1/2

6. 4(2y + 5) = 3(5y 2)

8y + 20 = 15y 6

20 + 6 = 15y 8y

26 = 7y

La solucin y = 26/7

7. 1/5x + 2 = 3 2/7x

1/5x + 2/7x = 3 2

17/35 x = 1

La solucin x = 35/17
8. x + 1 = 3

x = 3 -1

La solucin x = 2

9. 1.5x 0.7 = 0.4(3 5x)

1.5x 0.7 = 1.2 2x

1.5x + 2x = 1.2 + 0.7

3.5x = 1.9

La solucin x = 1.9/3.5

10. 6x + 12x -3 7x + 4= 0

11x + 1 = 0

11x = -1

La solucin x = -1/11
1.-
20 7x = 6x 6

-6x 7x = -20 -6

13 x = -26

x = -26 / -13

x=2
2.-
7x+2 = 10x+5

7x-10x = 5- 2

-3 x = 3

x = 3/-3
x = -1
3.-

6x5 = 8x+2

6x8x = 5+2

-2 x = 7

x = 7 /2
4.-
4x + 4 + 9x + 18 = 12 (x+2)

4x + 4 + 9x + 18 = 12 x+ 24

4x + 9x 12 x = -4 -18 + 24

13 x 12 x = -22 + 24

x= 2
5.-

(47+x)= 3.(x+11)

Resolucin:

(47+x)= 3.(x+11)
47+x=3x+33
47-33=3x-x
14x=2x
x=14/2=7
x+x+(x+18)+(x+18)=76

Resolucin:

x+x+(x+18)+(x+18)=76
4x=76-18-18
4x=40
x=40/4= 10

Sss

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