Question

ayuda por favor lo necesito es de matemáticas ​

Answer 1

Respuesta:

a) 7x + 12 = 2x + 27

7x -2x = 27 -12

5x = 15

x =15/5

x = 3

b) 4x + 8 = 8x +2

4x -8x = -8 + 2

-4x = -6

x = -6/-4

x = 1.5

c) 3x + 40 = 12x - 14

3x - 12x = -40 -14

-9x = -54

x = -54/-9

x = 6

d) 5x -6 = 7x -10.4

5x -7x = 6 -10.4

-2x = -3.6

x = -3.6/-2

x = 1.8

e) 3.5x + 8 = 6.5x -4

3.5x -6.5x = -8 -4

-3x = -12

x = -12/-3

x = 4

f) 3 (x + 6) = 2 (x -5)

3x + 18 = 2x -10

3x -2x = -18 -10

x = -28

g) 9 (x -1) = 6 (x + 3)

9x -9 = 6x + 18

9x -6x = 9 +18

3x = 27

x = 27/3

x = 9

h) 12 (x -3) = 8 (x -2)

12x -36 = 8x -16

12x -8x = 36 -16

4x = 20

x = 20/4

x = 5

i) 6 (x -8) = 3 (x + 1)

6x -48 = 3x + 3

6x -3x = 48 + 3

3x = 51

x = 51/3

x = 17