Question

m+n=17 n+p=15 p+m=18 n,m,p=?

Answer 1

m+n= 17
n+p = 15
p+m = 18
adunam cele 3 ecuatii
m+n+n+p+p+m = 17+15+18
2m+2n+2p = 50
2(m+n+p) = 50
m+n+p = 50:2
m+n+p = 25
p = 25- 17 = 8
m = 25-15 = 10
n = 25 - 18 = 7

Verificare:
8+10+7 = 25

p = 8
m = 10
n = 7