Question

afla numerele a si b stiind ca 2a+ b=939892, a+b=570008

Answer 1

2a+b=939 892
a+b=570 008=>a=570 008-b inlocuim in prima relatie
2 (570 008-b)+b=939 892
1 140 016-2b+b=939 892
1 140 016-b=939 892
1 140 016-939 892=b
200 124=b inlocuim valoarea lui b in prima relatie
2a+200 124=939 892
2a=939 892-200 124
2a=739 768
a=739 768:2
a=369 884

v: 2a+b=939892
2×369 884+200 124=939 892
739 768+200 124=939 892
939 892=939 892

a+b=570 008
369 884+200 124=570 008
570 008=570 008