Respuestas

2013-03-06T00:39:44+01:00

(3w-8)-(4-9w)+3=7w-2-(5w+9-3)

3w -8 -4 +9w+3 = 7w -2 -5w -9 +3

12w -7w +5w = -8 +8 +4 -3

10w = 1

w= 1/10

w=0.1