moguirre moguirre
  • 27-06-2019
  • Mathematics
contestada

find the solution of the following system of equations -5+2y=9 3x+5y=7

Respuesta :

luisejr77
luisejr77 luisejr77
  • 27-06-2019

Answer:

[tex]x=-\frac{28}{3}\\\\y=7[/tex]

Step-by-step explanation:

Given the system of equations:

[tex]\left \{ {{-5+2y=9} \atop {3x+5y=7}} \right.[/tex]

You can pply Substitution method:

First you must solve for "y" from the first equation:

[tex]-5+2y=9\\\\2y=9+5\\\\2y=14\\\\y=\frac{14}{2}\\\\y=7[/tex]

Therefore, the second and final step to solve the system of equations is to substitute the value of "y" into the second equation and solve for "x":

[tex]3x+5(7)=7\\3x=7-35\\\\x=-\frac{28}{3}[/tex]

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