Question

cum se rezolva operatia : m+n=17 n+p=15 p+m=18????? va roog ajutatima imi trebuie azi

Answer 1

m + n = 17
n + p = 15
m + p = 18
le adunam
2m + 2n + 2p = 50        | : 2
m + n + p = 25
m = 17 - n
p = 15 - n
17 - n + n + 15 - n = 25
- n = 25 - 15 - 17
- n = - 7
n = 7
m = 17 - 7
m = 10
p = 15 - 7
p = 8