Mejor respuesta

Natyvalemica
7

Respuesta : 1) - 2x - 5 = 8x + 3 - 2x - 8x = 3 + 5 - 10x = 8

x = - 2 / 5

2) 2x + 3(x - 2) = x + 22

2x + 3x - 6 = x - 22

2x + 3x - x = - 22 + 6

4x = - 16

x = - 4

3)x + 3(x - 1) = 6 - 4(2x - 3)

x + 3x - 3 = 6 - 8x + 12

x + 3x + 8x = 6 + 12 + 3

12x = 21

x = 7 / 4

4)3x + 5 = 5x / 2 + 4

2(3x + 5) = 5x + 4

6x + 10 = 5x + 4

6x - 5x = 4 - 10

x = - 6

5)4(y + 1) + 3y - 1 = 7y + 3

4y + 4 + 3y - 1 = 7y + 3

4y + 3y - 7y = 3 - 4 + 1

y = 0 /

6) 14 - 12x + 39x - 18x = 256 - 60x - 657x - 12x + 39x - 18x + 657x + 60x = 256 - 14

756x - 30x = 242

726x = 242 x = 242 / 726

x = 121 / 363

x = 11 / 33 x = 1 / 3

7)8x - 15x - 30x - 51x = 53x + 31x - 172

8x - 15x - 30x - 51x - 53x - 31x = - 172 - 172x = 172

x = - 1Explicación paso a paso :

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Respuesta 2

Jimena11111
6

1) - 2x - 5 = 8x + 3 - 2x - 8x = 3 + 5 - 10x = 8

x = - 2 / 5

2) 2x + 3(x - 2) = x + 22

2x + 3x - 6 = x - 22

2x + 3x - x = - 22 + 6

4x = - 16

x = - 4

3)x + 3(x - 1) = 6 - 4(2x - 3)

x + 3x - 3 = 6 - 8x + 12

x + 3x + 8x = 6 + 12 + 3

12x = 21

x = 7 / 4

4)3x + 5 = 5x / 2 + 4

2(3x + 5) = 5x + 4

6x + 10 = 5x + 4

6x - 5x = 4 - 10

x = - 6

5)4(y + 1) + 3y - 1 = 7y + 3

4y + 4 + 3y - 1 = 7y + 3

4y + 3y - 7y = 3 - 4 + 1

y = 0 / 0 indefinido o sin solucion

6) 14 - 12x + 39x - 18x = 256 - 60x - 657x - 12x + 39x - 18x + 657x + 60x = 256 - 14

756x - 30x = 242

726x = 242

x = 242 / 726

x = 121 / 363

x = 11 / 33

x = 1 / 3

7)8x - 15x - 30x - 51x = 53x + 31x - 172

8x - 15x - 30x - 51x - 53x - 31x = - 172 - 172x = 172

x = - 1.