contestada

(04.03 LC)
Create an equivalent system of equations using the sum of the system and the first equation.
-3x + y = 12
x + 3y = 6​

Respuesta :

unicorn3125

Answer:

             -3x + y = 12

             -2x + 4y = 18

Step-by-step explanation:

first equation of new system would be the same as first one given:

-3x + y = 12

-3x+y + x+3y = -3x + x + y + 3y = -2x + 4y

12 + 6 = 18

so the second equation would be:  -2x + 4y = 18

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