brejo821 brejo821
  • 11-03-2021
  • Mathematics
contestada


x + 5y =20
2x - 7y = 9

Respuesta :

mumsy
mumsy mumsy
  • 11-03-2021

Answer:

Step-by-step explanation:

will multiply the first equation with -2

-2x-10y=-40

i will add it now to the second equation

-2x-10y=-40

 2x-7y=9

-17y=-31

y=31/17

and x=185/17

Answer Link

Otras preguntas

8x+15=3x-20 how do you do this
A metal box, attached to a small parachute, is dropped from a helicopter. explain in terms of the forces acting; why:(i) its velocity increased immediately afte
8x+15=3x-20 how do you do this
What is the length of the earth's crust? Oceanic and Continental.
How is the coastline of new jersey different from the coastline of Maine
95 is 95% of what number?
How is the coastline of new jersey different from the coastline of Maine
What is the length of the earth's crust? Oceanic and Continental.
How to find greatest common factor  45 and 81
Ms groves had trays of paint each tray has five colors one of the colors is purple.what fraction of the colors in 20 trays is purple