Question

Ayúdenme a resolver esto:
a) 6 ( x-2 ) = 3 ( x+1 )
b) 4 ( 3x - 1 ) = 2 ( 2x + 6 )
c) 8 ( 2x + 5 ) = 2 ( 3x + 5 )
d) 9 ( 2x - 4) = 6 ( x + 2 )

Answer 1

Explicación paso a paso:

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

6x-12=3x+3

6x-3x=12+3

3x=15

x=15/3

x=5

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

12x-4=4x+12

12x-4x=12+4

8x=16

x=16/8

x=2

c) 8 ( 2x + 5 ) = 2 ( 3x + 5 )

16x+40=6x+10

16x-6x=10-40

10x=-30

x=-30/10

x= -3

d) 9 ( 2x - 4) = 6 ( x + 2 )

18x-36=6x+12

18x-6x=12+36

12x=48

x=48/12

x=4