hegarty56 hegarty56
  • 11-12-2021
  • Mathematics
contestada

4х + Зу = — 15
Зу = 2х + 3

Respuesta :

jimrgrant1 jimrgrant1
  • 11-12-2021

Answer:

(- 3, - 1 )

Step-by-step explanation:

4x + 3y = - 15 → (1)

3y = 2x + 3 → (2)

Substitute 3y = 2x + 3 into (1)

4x + 2x + 3 = - 15

6x + 3 = - 15 ( subtract 3 from both sides )

6x = - 18 ( divide both sides by 6 )

x = - 3

Substitute x = - 3 into (2)

3y = 2(- 3) + 3 = - 6 + 3 = - 3 ( divide both sides by 3 )

y = - 1

solution is (- 3, - 1 )

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alexbentley110204
alexbentley110204 alexbentley110204
  • 11-12-2021
I think this is the answer
Ver imagen alexbentley110204
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