Question

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Answer 1

Explicación paso a paso:

D) x + 1 = 15 - 6x

x + 6x = 15 - 1

7x = 14

x = 14/7

x = 2

E) 7x-12-12= -x+12

7x + x = 12 + 12 + 12

8x = 36

x= 36/8

x = 4.5

F) -14 + 3x = 4x + 21 + 4x

3x - 4x - 4x = 21 -14

-x -4x = 7

-5x = 7

x = 7/-5

x = -1.4

G) x - 8x - 4 + 7 = 18 + 3x + 5

x - 8x - 3x = 18 + 5 + 4 - 7

-7x - 3x = 27 - 7

-10x = 20

x = 20/-10

x = -2

H) -7x + 11 + 4x - 8 = -18

-7x + 4x = -18 - 11 + 8

-3x = -29 + 8

-3x = -21

x = -21/-3

x = 7