Respuestas

2012-11-09T04:42:32+01:00

7x-11=22

7x-11-22=0

7x-33=0

7x=33

x=33/7

2012-11-09T04:47:34+01:00

7X -11 =22

7X= 22+11

X = 33/7

X = 4.71 

COMPROBACION:

7X - 11 = 22

7(4.71) - 11 = 22

33 - 11 = 22