Respostas

2013-11-30T19:06:30-02:00
A = (7x4 + 2x3)/2
A = (28+6)/2
A = 34/2
A = 17
F = 9
V-A+F = 2
V-17+9 = 2
V = 2+17-9
V = 19-9
V = 10