Respuestas

2013-01-16T19:49:59+01:00

RESOLVAMOS:

a) 2(x -5) = 3(x+1) -3

2X-10=3X+3-3

X=-10

b) 2 (x-3)= 4+ 14

2X-6=18

2X=24

X=12

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

5x+15=4x-8

x=-23

d) x+4 =3(x+12)

x+4=3x+36

-2x=32

x=-16

 

SALUDOS

2013-01-16T19:58:07+01:00

a) 2(x -5) = 3(x+1) -3

2X-10=3X+3-3

X=-10

b)

2 (x-3)= 4+ 14

2X-6=18

2X=24

X=12

c)

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

5x+15=4x-8

x=-23

d)

x+4 =3(x+12)

x+4=3x+36

-2x=32

x=-16