Respuestas

2012-12-11T13:56:52+01:00

x+11=6-(3-7x)

x+11=6-3+7x

8=6x

4=3x

x=4/3

2012-12-11T14:50:10+01:00

LA repuesta es:

x+11=6-(3+7x)

x+11=6-3-7x

x+7x=6-3-11

8x=-8

x=-8/8

x=-1

COMPROBACION

(-1)+11=6-(3+7(-1)

10=6-(3-7)

10=6-(-4)

10=6+4

10=10