Question

{3x + 2y = 5

{−x = −7​

Answer 1

Resposta:

Explicação passo-a-passo:

$\left \{ {{3x + 2y=5} \atop {-x=-7}} \right. \\\\\\\left \{ {{3x + 2y=5} \atop {-3x=-21}} \right. \\\\2y = - 16\\y = -16/2\\y = 8\\\\\\3x + 2(8) = 5\\3x + 16 = 5\\3x = -11\\x = -11/3$