kailey4555 kailey4555
  • 14-09-2020
  • Mathematics
contestada

2x + y - z=-7
5y- z=1
3z = 12
solve the 3x3 system

Respuesta :

meredith48034
meredith48034 meredith48034
  • 15-09-2020

Answer:

Step-by-step explanation:

3z = 12

z = 4

5y - 4 = 1

5y = 5

y = 1

2x + 1 - 4 = -7

2x - 3 = -7

2x = -4

x = -2

(-2, 1, 4)

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