Question

Решите систему уравнений: ( x = x + 3y = 12 (4x + 2y = -12

Answer 1

Ответ:
{х+3у=-12
{12(4х+2у)=-12

{-4х-12у=-12
{4х+2у= -1
-10у=47
у=-47/10
4х+2×(-47/10)= -1
х=21/10
(х,у)=(21/10, -47/10)