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2014-03-19T11:01:07-03:00
A) 1/3
b) A + (3× A)
c) 1/2
d) 2
e) 2xB
1 5 1
2014-03-19T11:05:19-03:00
 \frac{x}{3} b) x+3.x c) \frac{x}{2}     d)?    e)x.2