Respostas

2014-02-10T20:41:09-02:00
1) N=7 pois 7+3= 10
2) N= 40 pois 40-5=35
3) N= 9 pois 2. 9= 18
2 4 2
2014-02-10T20:43:06-02:00
N + 3 = 10
N = 10 - 3
N = 7

N - 5 = 35
N = 35 + 5
N = 40

2.N = 18
2N = 18
N = 18 / 2
N = 9 
1 5 1