jenniferdiaz2005 jenniferdiaz2005
  • 12-06-2020
  • Mathematics
contestada

2x + 3y = 1240
x = 2y - 10

Respuesta :

unicorn3125
unicorn3125 unicorn3125
  • 05-08-2020

Answer:

             x = 350,    y = 180

Step-by-step explanation:

2x + 3y = 1240       and    x = 2y - 10

so:

  2(2y - 10) + 3y = 1240

     4y  - 20 + 3y = 1240

                 +20         +20

                      7y = 1260

                       ÷7       ÷7

                        y = 180

x = 2•180 - 10 = 360 - 10 = 350

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