Question

Aflați trei numere naturale daca: a+b=20 a+c=23 b+c=17​

Answer 1

Răspuns:

a+c=23

a+b=20

__________

(➖)

b-c=3=>b=c+3

b+c=17=>c+3+c=17

2c=14

c=7=>b=7+3=10

a+b=20=>a=20-b=20-10=10

a=10

b=10

c=7