amaqueda
amaqueda amaqueda
  • 02-04-2022
  • Mathematics
contestada

Find the solution of the system of equations.
8x – 2y = -30
–9x + 4y = 18

Respuesta :

Аноним Аноним
  • 02-04-2022

Step-by-step explanation:

8x – 2y = -30 } ×2

16x - 4y = -60

–9x + 4y = 18

___________

7x=-42

x=-6

8(-6)-2y=-30

-2y=-18

y=9

Answer Link
annie413
annie413 annie413
  • 02-04-2022

Answer:

(-6,-9)

Step-by-step explanation:

The quickest way is to solve with elimination. Multiply the top equation by 2.

2(8x – 2y = -30)

16x-4y=-60

16x-4y=-60

–9x + 4y = 18

7x=-42

x=-6

8x – 2y = -30

8(-6) – 2y = -30

-48-2y=-30

-2y=18

y=-9

Answer Link

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