Question

Aflati 3 nr naturale a,b,c care verifica realitatile a+b=28 a+c=20 b+c=16

Answer 1

a+b=28 deci a=28-b
b+c=16  deci c=16-b
a+c=20
28-b+16-b=20
44-2b=20
2b=44-20
2b=24
b=24/2
b=12
a=28-12=16
c=16-12=4

Answer 2

B= 28-a; c=20-a=>28-a+20-a=16=>a=16; b=12; c=4