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Greeley [361]
2 years ago
6

- 4x + y = 6 - 5x - y = 21 The solution is

Mathematics
1 answer:
77julia77 [94]2 years ago
4 0

Answer:

x = -3

y = -6

Step-by-step explanation:

y = 6 + 4x \\  - 5x - (6 + 4x) = 21 \\  - 9x - 6 = 21  \\  - 9x = 27 \\ x =  - 3 \\ y = 6 + (4 \times  - 3) =  - 6

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