Ответ:

q = -7/12

v = 1/12

Объяснение:

[tex]\left \{ {{7v+q=0} \atop {-q+5v=1}} \right. |+\\\\12v=1\\v=\frac{1}{12} \\\\7*\frac{1}{12} +q=0\\\frac{7}{12} +q=0\\q=-\frac{7}{12}[/tex]