abbieob abbieob
  • 19-05-2021
  • Mathematics
contestada

(Sugg
eous equations.
3x + 2y = 12
4x – y = 5

Respuesta :

samuelduncan91
samuelduncan91 samuelduncan91
  • 19-05-2021

Answer:

1 × (3x + 2y = 12)

2 × (4x - y = 5)

3x + 2y = 12

+ (8x - 2y = 10)

= 11x = 22

divide both sides by the coefficient of 'x' (11)

Therefore x = 2

put (x = 2) in equation 1

3(2) + 2y = 12

6 + 2y = 12

2y = 12 - 6

2y = 6

divide both sides by the coefficient of 'y'(2)

Therefore y = 3

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