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2013-11-07T01:07:39-02:00
A) N+9=25
N=25-9
N=16

B) N/3=12
N=12*3
N=36

C) 8*N=6
N=6/8
N=3/4

D) N*12=60
N= 60/12
N= 5
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2013-11-07T01:31:16-02:00
A) n + 9 = 25
    n = 25 - 9
    n = 16

b) n : 3 = 12
     n = 12 x 3
     n = 36

c) 8n = 6
n = \frac{6}{8}
n = \frac{6}{8}

d) 12n = 60
n = \frac{60}{12}
      n = 5
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