Question

Ayuda!!
2t-3z=-12
4t+7z=2

Answer 1

Respuesta:

1) 2t-3z=-12

  4t+7z=2

      ↓

  $\frac{3}{2} z -6=t\\\\-\frac{7\\}{4} z + \frac{1}{2} =t$

IGUALACION:

$\frac{3}{2}z -6= -\frac{7}{4} z +\frac{1}{2\\} \\\\\frac{13}{4} z= \frac{13}{2} \\\\z= \frac{\frac{13}{2} }{\frac{13}{4} } =\frac{52}{26} = 2$RPTA.