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REY [17]
3 years ago
7

Please help please help

Mathematics
2 answers:
Slav-nsk [51]3 years ago
8 0

Answer:

thank you

sa points

sorry

VikaD [51]3 years ago
6 0

Answer:

(0, 1, 3)

Step-by-step explanation:

multiply the third equation by 2

5x + 4y - z = 1

2x - 2y + z = 1

-2x - 2y + 2z  = 4

add all three equations together

5x + 2z = 6

        z = (6 - 5x) / 2 = 3 - 2.5x

add the first equation to twice the second

9x + 0y + z = 3

substitute for z

9x + (3 - 2.5x) = 3

              6.5x = 0

                    x = 0

5(0) + 2z = 6

           z = 3

2(0) - 2y + 3 = 1

            y = 1

         

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