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  • 18-10-2018
  • Mathematics
contestada

y - x = 2
2x - 3y = 32
solve for x and y

Respuesta :

gmany
gmany gmany
  • 19-10-2018

[tex]\left\{\begin{array}{ccc}y-x=2&|\cdot2\\2x-3y=32\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}2y-2x=4\\2x-3y=32\end{array}\right}\qquad|\text{add both sides of the equations}\\.\qquad-y=36\to y=-36\\\\\text{put the value of y to the first equation}\\\\-36-x=2\qquad|+36\\\\-x=38\to x=-38\\\\Answer:\ \boxed{x=-38,\ y=-36}[/tex]

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