Nigman999 Nigman999
  • 15-05-2019
  • Mathematics
contestada

Equation A: x + z=6
Equation B: 3x + 2z=1

Respuesta :

22sophielowe
22sophielowe 22sophielowe
  • 15-05-2019

Answer:

x = -11 / z = 17

Step-by-step explanation:

A: x + z = 6

B: 3x + 2z = 1

--------------------

( x + z = 6 ) 2

( 3x + 2z = 1 ) - 1

A': 2x + 2z = 12

B': - 3x - 2z = - 1

- x = 11

x = - 11

----------

A': 2x + 2z = 12

2 (- 11) + 2z = 12

-22 + 2z = 12

2z = 34

z = 17

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